The Fertility Window in My Dasha Ladder

A Vedic chart can date periods. It cannot measure a body. Those are two different questions, and people arrive asking the second one and leave with an answer to the first that was never made specific enough to use.

Here is what specific looks like. Somebody trying since 2023, with a transfer being discussed for October, wants to know what their own chart says about October. The usual answer names a mahadasha, which is one of the long chapters that Vimshottari, the Vedic period system, divides a life into, and then it stops there. A mahadasha runs six to twenty years. Told that a twenty-year chapter is favourable, the person asking about October has learned nothing about October.

The chapter has sub-periods, and those sub-periods have sub-periods of their own. Go down two levels and the dates land inside a season rather than inside a decade. That is the whole method on this page: which planets carry the 5th house in your chart, which of your dated sub-periods over the next three years are run by those planets, and where Jupiter's and Saturn's real transits fall across the same house.

What none of it produces is a probability of conceiving. That number is not one the arithmetic contains, and the next section says why that matters more here than it would anywhere else.

Read this part before the rest

Fertility is medical. The tests, the numbers and the treatment decisions belong with the doctor who can see them, and a period calendar is never a reason to start, stop, delay or change anything they have advised. This page dates windows. It does not grade a person.

The distinction matters more than it might sound, because of what people actually get told. "Your chart shows children are denied" is a sentence with no computation behind it and a great deal of damage in it. The classical material supports timing claims. It does not support capacity claims, and the two get blurred because the second one sells better.

There is one more line worth setting down now, since it changes how to read every table further on. A period that carries no 5th-house planet is not bad news, and it is not an empty result. Across the sample measured below, the median chart's longest uncovered gap in three years is 337 days. That is a normal shape for a calendar, not a finding about a person, and what it is good for is the groundwork: tests, treatment planning, health, rest, and getting things in place so that a supported window is not spent preparing.

The three depths of a Vimshottari ladder

Vimshottari is the period system Vedic practice uses for timing. It divides a life into nine chapters of fixed length that always follow the same order, and the total comes to 120 years.

That is the order too, read top to bottom and then wrapping round. A chapter is a mahadasha. Which one you were born into, and how much of it was already spent at your birth, is decided by where the Moon sat at the moment you were born, and the next section shows exactly how.

Inside every mahadasha the same nine lords run again in the same order, starting with the lord of the mahadasha itself, and each one takes the same share of the chapter that it takes of 120 years. Each of those nine is an antardasha, meaning a sub-period one level down from the chapter. So inside a Moon mahadasha of 10 years, the Rahu antardasha lasts 10 × 18 ÷ 120 years, which is a year and a half.

Inside every antardasha the nine run once more, on the same proportional rule, and each of those is a pratyantar, meaning a sub-period two levels down from the chapter. Inside that Moon-Rahu antardasha of 547.9 days, the Jupiter pratyantar lasts 547.9 × 16 ÷ 120 days, which is 73 days.

It is one proportional rule applied at each level down. Written out, the arithmetic for any pratyantar in any chart is:

days = mahadasha years × (antardasha lord's years ÷ 120) × (pratyantar lord's years ÷ 120) × 365.25

Run that over all 729 combinations of the nine lords and the shortest pratyantar in the whole system is Sun inside Sun inside Sun at 5.5 days, the longest is Venus inside Venus inside Venus at 202.9 days, and the median is 50.7 days. Fifty days is the natural grain of this level. It is short enough to sit inside a treatment cycle and long enough that a date does not have to be exact to fall inside it.

That grain is what makes the third level worth computing. Over a three-year window, the median chart passes through 3 antardashas and 17 pratyantars, with a range from 8 to 48 depending on which lords are running. Seventeen boundaries across three years is fine enough to set beside a treatment schedule. Three boundaries across the same three years is not.

What the third level actually adds, measured

An objection is fair here: if the antardasha already tells you which chapter is supportive, is a third level anything more than decoration?

It is more than decoration, and the size of the difference can be measured rather than argued. We generated 100,000 charts (seed 20260826, births spread evenly across 1985 to 2003, clock times spread evenly across the day, birthplaces drawn from ten Indian cities), computed each one's 5th-house planets, and then walked each ladder day by day across the 1,096 days from 26 August 2026 to 26 August 2029.

Read the 10th-percentile column first, because that is where the two levels part company. More than one chart in ten has no supported antardasha at all in the next three years, so an antardasha-level reading hands those people a blank page for the entire period they are asking about. At pratyantar level the 10th percentile is 160 days. Only 0.70% of charts come back with nothing at all.

The overlap between the two levels is smaller than it looks as well. Of all the days that fall inside a supported antardasha, 33.1% are also inside a supported pratyantar. Turned the other way round: 66.9% of the dated sub-periods a person gets in the next three years sit outside any supported antardasha, so they are invisible to the coarser reading entirely. And 4.47% of charts have the reverse problem, a supported antardasha with no supported pratyantar anywhere inside it, which is worth knowing before treating a favourable chapter as a green light for every month in it.

The count of separate windows is the number most people are actually asking after. Its distribution across the 100,000: 0.7% of charts have none, 6.8% have one, 20.2% have two, 20.5% have three, 17.7% have four, 11.9% have five, and the remaining 22.2% have six or more. And the first of them is usually close. 56.8% of charts have a supported pratyantar opening within 90 days, and 89.9% within a year.

That last figure is worth sitting with if you have been told to wait for a distant date. 56.8% is a majority, so a supported window inside the next three months is what the ordinary chart produces. What varies from chart to chart is how many windows there are, how long each one runs, and whether the transits land on any of them.

Which planets time the 5th house in your chart

A sub-period is only relevant to this subject if its lord has business with the 5th house. So the ladder is half the calculation and the chart is the other half.

The 5th house, putra bhava in the classical vocabulary, is the house Vedic practice assigns to children, and it is counted whole sign from the lagna, the sign that was climbing the eastern horizon at your birth moment and birth place. The whole of the rising sign is the 1st house, the whole of the next sign is the 2nd, and the 5th house is the entire fifth sign along. Because that counting is fixed, your 5th sign and its ruling planet follow from your rising sign alone.

Four kinds of planet earn a place on the timer list, and each one is checkable by eye on your own wheel.

The 5th lord. The planet ruling your 5th sign, from the table above, wherever in the chart it actually sits. Because rising signs are unevenly distributed at Indian latitudes, so are 5th lords. Across the 100,000 charts: Jupiter 18.8%, Saturn 18.1%, Mars 17.8%, Venus 16.8%, Mercury 14.9%, Sun 7.0%, Moon 6.5%. Rahu and Ketu rule no sign, so neither can ever be a 5th lord, though either can occupy the house.

Jupiter, always. Jupiter is the karaka for children, also called the significator, meaning the planet the tradition treats as standing for the subject itself in every chart regardless of where it sits. It is on the list even when it has no other connection to the 5th. When it does have one, that connection is stronger than the general claim: Jupiter stands inside the 5th house in 8.1% of charts and aspects it from elsewhere in 25.3%, so a third of all charts have Jupiter landing on this house directly.

Anything sitting in the 5th. A planet inside the house carries the house's affairs during its own periods. Just under half of all charts have nobody there: 49.3% have an empty 5th, 33.0% have exactly one planet, 12.4% have two, and 5.4% have three or more.

The 9th lord, as the secondary. The 9th is the fifth house counted from the 5th, so the tradition reads it as the 5th house of the 5th house and gives it a lighter weight than the other three. The Children and Fertility report scores it alongside them. The two charts worked below keep their main tables to the primary three so the arithmetic stays followable, and each one then says underneath exactly which extra days the 9th lord would have added, because leaving that unsaid would make the tables look tidier than the method is.

Put together, that gives most people a short list. Timer-list sizes across the 100,000: 9.6% of charts have one planet on the list, 53.0% have two, 27.5% have three, and 9.9% have four or more. Two is the common case, and it is usually Jupiter plus the 5th lord.

One condition modifies the reading without changing the list. Dignity is a planet's condition in the sign it occupies, and it is fixed by a table rather than by judgement. Own sign, meaning the planet is in a sign it rules, so it is at home and answerable to nobody. Exalted, meaning the single sign where it performs at its strongest. Debilitated, meaning the sign opposite that one, where it performs at its weakest. Everything else is neutral.

Across the sample the 5th lord came out neutral 67.4% of the time, in its own sign 15.4%, debilitated 9.3% and exalted 7.8%. So two charts in three have nothing to say at this line, which is worth knowing before going looking for a verdict in it. When the dignity is neutral the reading comes from which planets are on the timer list and when their periods run, and that is never blank.

A debilitated timer is still a timer. The classical reading of a weak planet in charge of a period is that it delivers with friction and delay rather than withholding, so it stays on the list and its sub-periods still get marked. Striking weak planets off would also thin the forward calendar exactly where the chart already had least to offer, which turns a description of a placement into a description of a person.

Finding your own pratyantar boundaries by hand

This is the part you can do without an account, and it is worth doing once because it makes every dated claim afterwards checkable.

Step one: find the Moon's nakshatra, which is one of 27 equal segments of the zodiac, each 13 degrees 20 minutes wide. Every point on the circle falls inside exactly one of them, and the segment that matters here is the one the Moon occupied at your birth. Our free kundli tool returns it along with the Moon's exact degree, and the free nakshatra tool returns it on its own.

Step two: read off your first chapter's lord. Each nakshatra carries a ruling planet, and the sequence repeats every nine.

Step three: work out how much of it was left at birth. Take the Moon's position inside its nakshatra as a fraction of the full 13 degrees 20 minutes, and the part still to come is the part of that first chapter you were born with. A Moon 4.95 degrees into Moola has used 37.1% of the segment, so 62.9% of Ketu's 7 years remained, which is 4 years and 5 months from the birth date. Every later chapter then follows in the fixed order at its full length. The first chart worked below is exactly this case, and the chain is worth following once: Ketu from the birth date in September 1994 until February 1999, Venus for its full 20 years to February 2019, Sun for its 6 to February 2025, and then the Moon chapter opening on 5 February 2025, which is the date the computed timeline gives.

Step four: subdivide twice. Apply the formula from earlier to get the antardasha you are in today, then again to get the pratyantar. Our free dasha tool does all four steps and prints the three periods running right now with their start and end dates, which is enough to check your arithmetic against.

Step five: mark the ones your timer list matches. Take the 5th lord from the rising-sign table, add Jupiter, add anything sitting in your 5th, and go through the ladder marking every sub-period whose lord is on the list. Note separately whether the antardasha above it is also on the list, because a pratyantar inside a matching antardasha reads differently from one inside a chapter that has no 5th-house business at all.

What the free tools stop short of is the forward ladder: they give you today's three periods rather than the next thirty-six months of them, and they do not know which planets your 5th house makes relevant. Step four you can grind out on paper. Step five needs the chart.

Jupiter and Saturn on the 5th house, 2026 to 2029

Transits are the part of this that is identical for everyone. Jupiter is in one sign at a time and it is the same sign for the whole planet, so once you know which sign is your 5th, the dates below are yours with no further computation.

Two slow planets matter here. Jupiter is the karaka, so classical practice reads its arrival on the 5th house as the trigger over a supportive period. Saturn is read as the weight that makes an outcome durable rather than as an opening. When both reach the same house at once, the tradition treats the pair as the strongest transit signature it recognises, and Jupiter and Saturn take about twenty years to repeat their cycle, so this is a rare alignment rather than a monthly one.

Sidereal positions, ingress dates found by binary search to the day. Several rows below are marked retrograde, meaning the planet appears from Earth to move backwards against the fixed stars for a while, so it crosses back into the sign it has just left and then enters the next one again later:

A planet reaches a house either by standing in it or by aspecting it, and the aspects are not symmetric. Every planet aspects the 7th sign from itself, the one directly opposite. Jupiter additionally aspects the 5th and the 9th from itself; Saturn additionally aspects the 3rd and the 10th. Jupiter has no 11th aspect, however often that appears in circulation.

Applying those two ingress tables and those two aspect rules to each rising sign gives the following. Two things to expect in it. Some of the windows are only days long, because a retrograde re-entry can line the pair up for a week and then break it again, and those are listed rather than smoothed away so the total adds up. And the scan stops on 26 August 2029, so a window that touches that date is cut there rather than ending there.

Sagittarius and Virgo rising get the most of this over the three years, with 356 and 315 days respectively of both planets on the 5th at once. Three rising signs get none. For Aries rising the 5th is Leo, and Saturn's path from Pisces through Aries into Taurus never reaches Leo by sign or by aspect at any point in the window. For Cancer and Pisces rising, whose 5th houses are Scorpio and Cancer, Saturn arrives only once it enters Taurus on 8 August 2029, and by then Jupiter is in Virgo, which reaches neither of those two signs.

A transit on its own is not a window, which is the mistake this table invites. A Jupiter aspect onto the 5th while every sub-period running is held by planets with no 5th-house business is a trigger with nothing to trigger. The value of the table is the overlap with your own ladder, and that is what the two worked charts below show.

A chart worked end to end

Born 13 September 1994 at 09:03 in Kolkata. Age 31 on 26 August 2026, and every value below is computed from that birth data.

Libra rises at 15.87 degrees, in Swati pada 3, a pada being one of the four quarters each nakshatra is divided into. So the 5th house is the whole of Aquarius and its lord is Saturn.

Saturn is in Aquarius at 14.36 degrees, in Shatabhisha pada 3, retrograde, meaning it was moving backwards against the fixed stars as seen from Earth at that moment. Aquarius is one of the two signs Saturn rules, so it is in its own sign, and it is sitting in the 5th house itself. That is the same planet arriving on the timer list twice, once as the ruler of the house and once as its occupant.

Jupiter is in Libra at 17.99 degrees, in Swati pada 4, neutral by dignity, in the 1st house. From Libra it casts its 5th aspect onto Aquarius, so it reaches the house of children from the rising sign. The Sun aspects the 5th too, from Leo by opposition, and Rahu from Libra by its 5th aspect, but neither is on this chart's timer list: the Sun rules the 11th here and Rahu rules nothing.

So the timer list for this chart has exactly two planets on it, which is the commonest case. Saturn, because it rules the 5th house and stands in it. Jupiter, because it signifies children in every chart and because here it also aspects the 5th.

The secondary is Mercury, which rules Gemini and so rules the 9th house here, and it is exalted in Virgo in the 12th. Counting it would add three more sub-periods to the table below, 7 March to 23 May 2027, 28 May to 5 August 2028, and 7 to 26 August 2029, which is 165 days at a lighter weight. The tables that follow leave it out.

Then the D-7 Saptamsha, which is a divisional chart, meaning a second wheel derived from the first by cutting every sign into equal parts and reading where each planet lands. The D-7 cuts each sign into seven and the tradition reads it for progeny specifically. Here Jupiter lands in Aquarius, whose lord is Saturn, and Saturn lands in Taurus, whose lord is Venus. Jupiter arriving in Saturn's sign in that second wheel, when Saturn is the 5th lord of the birth chart, is the two timers pointing at each other. Where the D-7 agrees with the 5th house the reading is firmer, and here the two agree.

On 26 August 2026 this chart is in the Moon mahadasha, which runs 5 February 2025 to 6 February 2035, with the Rahu antardasha running 8 July 2026 to 7 January 2028 and the Rahu pratyantar running 8 July 2026 to 28 September 2026. Neither the Moon nor Rahu is on this chart's timer list, so all three levels are quiet as of today.

Here is the full ladder for the thirty-six months. Twenty sub-periods, which is above the median of seventeen.

Three separate windows come out of that, and they are not equivalent to each other.

28 September 2026 to 7 March 2027, 160 days. Jupiter's pratyantar runs straight into Saturn's, so both timers hold the third level back to back inside a single antardasha. The antardasha itself is Rahu's and has no 5th-house business, which is exactly the case the population figures said would be invisible at the coarser depth. Jupiter's transit lands inside it: from Leo, Jupiter casts its 7th aspect onto Aquarius from 31 October 2026 to 25 January 2027, which is 86 of the 160 days. So the part of this window with both layers on it is November to late January, and it splits across the two sub-periods: 40 of those 86 days fall inside the Jupiter pratyantar, which ends on 10 December, and the remaining 46 inside the Saturn one.

7 January 2028 to 28 May 2028, 142 days. The same two timers at the third level again, and this time the antardasha is Jupiter's, so the chapter and the sub-period agree. Jupiter's transit returns to Leo on 28 February 2028 and holds its aspect onto Aquarius for the remaining 90 days of the window. Of the three, this one has the most layers pointing the same way.

8 May 2029 to 7 August 2029, 91 days. Saturn's antardasha with Saturn's pratyantar inside it, both on the timer list. No Jupiter transit reaches Aquarius during it, and Saturn's transit does not reach Aquarius at all until 8 August 2029, the day after the window closes. So the dasha layer is strong here and the transit layer is absent, which is a different shape from the other two and worth naming as such rather than averaging away.

Totalled: 393 of 1,096 days marked at the third level, 35.9% of the window, against a population median of 28.4%. Add the Jupiter antardasha months where the chapter is supported but the sub-period is not, and 597 days sit inside a supported antardasha, 54.5% of the window.

The same method on a chart where the answer is different

Born 7 March 1996 at 18:03 in Chandigarh. Age 30 on 26 August 2026.

Leo rises at 19.36 degrees in Purva Phalguni pada 2, so the 5th house is Sagittarius and its lord is Jupiter. Jupiter is in Sagittarius at 18.99 degrees, in Purva Ashadha pada 2, direct, in its own sign, in the 5th house.

That is one planet holding every structural role this subject has: the ruler of the house, the natural significator of children, and the occupant of the house, all in a sign it rules. Structurally there is not much more a 5th house can be given. Saturn from Pisces casts its 10th aspect onto Sagittarius as well, and in the D-7 Jupiter lands in Aries, ruled by Mars.

Anyone reading only the structure would stop here and call it settled. The timing says something else, and the difference between the two is the point of this section.

The timer list has one planet on it, which puts this chart in the 9.6% with the shortest possible list. When one planet carries every role, that planet's periods are the whole calendar, and there is nothing else to fall back on between them.

The secondary here is Mars, which rules Aries and so rules the 9th house, sitting in Aquarius in the 7th at neutral dignity. Counting it would add 26 to 29 August 2026 and 24 August to 17 October 2028, which is 57 days at a lighter weight. As with the first chart, the table below leaves it out.

On 26 August 2026 the chart is in the Jupiter mahadasha, 4 November 2024 to 4 November 2040, with the Jupiter antardasha running 4 November 2024 to 24 December 2026 and the Mars pratyantar running 14 July 2026 to 29 August 2026.

Twelve sub-periods, and the Jupiter pratyantar of March to July 2029 is the one sub-period among them that the single timer holds. 123 days of 1,096, which is 11.2%, well under the population median of 28.4%.

The four months to 24 December 2026 are where the layers disagree, and the disagreement is worth setting out in full. The mahadasha is Jupiter's and the antardasha is Jupiter's, so the chapter and the sub-chapter are both held by the planet that rules, signifies and occupies the 5th house. Both transits arrive on the house at the same time: Jupiter reaches Sagittarius by its 5th aspect from Leo on 31 October 2026, and Saturn is already on it by its 10th aspect from Pisces. From 31 October to 24 December 2026 this chart has 54 days with the mahadasha, the antardasha and both slow transits all on the 5th house at once, which is as much convergence as this method produces. And the pratyantar running through all of it is Rahu's, which is on none of it.

So the reading of those 52 days is that the chapter is supported, the transit trigger is on, and the sub-period inside them is held by a planet with no 5th-house role in this chart. Stated as an answer rather than as three findings: this is the supported chapter, it closes on 24 December 2026, and the sub-period covering the best of it is Rahu's, which the period vocabulary describes as sudden change and unconventional paths rather than as steady delivery. Somebody planning a cycle inside those weeks now has both halves of that: a date range that the chapter and the sky both favour, and a reason to expect the route through it to be an unusual one.

After 24 December 2026 the antardasha turns to Saturn's, which has no 5th-house role in this chart, and it holds until 6 July 2029. Inside those two and a half years the only sub-period on the timer list is Jupiter's own, 5 March to 6 July 2029, 123 days. No Jupiter or Saturn transit reaches Sagittarius during it.

Both charts had something to say. One had 393 marked days and three windows with transits on two of them; the other had 120 days of supported chapter closing in four months, then a long quiet run, then a single 123-day window at the far end. Neither of those is a verdict about the person. They are different calendars, and treating the second as bad news would be reading a schedule as a diagnosis.

When the layers disagree, read the disagreement

Four layers have gone into both readings above, and they will not always point the same way. Each one answers a different question, which is why a disagreement between them is information rather than a contradiction to resolve: it tells you which part of the picture is doing the work and which part is absent.

The structure (the 5th lord, its dignity, what sits in the house, Jupiter's relationship to it) says how much of the chart is committed to this subject at all. It is fixed at birth and it never changes.

The mahadasha and antardasha say whether the current chapter of life is one where that structure gets used. This is the level almost every reading stops at, and on its own it is coarse: a chapter runs years, and more than one chart in ten has no supported chapter at all in the next three.

The pratyantar says which weeks inside that chapter carry it. This is the level that produces dates you can put next to a treatment cycle, and two thirds of the dated windows a chart holds live only here.

The transits say when the trigger arrives from outside. They are the same for everyone with the same rising sign and they can be looked up years ahead, which is why they are the only layer on this page that can be printed in a table for all twelve.

Chart one showed a supported pratyantar pair inside an unsupported chapter, with the transit landing on it. Chart two showed a supported chapter with the transit on and an unsupported pratyantar inside it. Both shapes are common, and neither of them is a reason to move anything on the medical calendar, which runs on its own clock and answers to different evidence.

What your birth time does: the rising sign survives, the ladder does not

Two things on this page depend on the birth clock time, and they depend on it in opposite ways. The one people usually worry about is the one that barely moves.

The rising sign is robust. In both worked charts we recomputed the ascendant at every minute for forty minutes either side of the recorded time, and it never changed. Libra held across the whole eighty-minute span in the first chart, Leo across the whole span in the second. A rising sign takes roughly two hours to climb, so a half-hour of uncertainty usually leaves it alone, which means the 5th sign, the 5th lord, the occupants, the aspects onto the house and the entire transit table stay put.

The dasha ladder is not robust at all. The Moon moves about 13 degrees a day, so ten minutes of clock error moves it about a tenth of a degree. That looks small until you see where it lands: it changes the fraction of the birth nakshatra already travelled, which changes how much of the first chapter was left at birth, and every boundary in the whole ladder afterwards slides by the same amount.

The size of the slide has a closed form:

days of slide = (first chapter's length in years) × (Moon's daily motion × minutes ÷ 1440) ÷ 13.3333 × 365.25

For chart one, born with the Moon in Moola whose lord Ketu carries a 7-year chapter, and the Moon moving 13.834 degrees a day, ten minutes of error moves every boundary 18.4 days. For chart two, Moon in Hasta whose lord Moon carries a 10-year chapter, at 12.950 degrees a day, ten minutes moves them 24.6 days. Recomputing the actual ladders confirms it: chart one's first window opens 28 September 2026 at the recorded time, 16 October at ten minutes earlier, and 9 September at ten minutes later.

Across 5,000 charts drawn the same way as the main sample, ten minutes of birth time error moved the next pratyantar boundary by a median of 38 days, with a minimum of 13 and a maximum of 59, and it moved it by more than a week in 100% of cases and by more than a month in 54.7%. A full hour of error moved it by a median of 228 days. The formula reproduces the measurement: run analytically over 60,000 charts it gives a median of 38.5 days for ten minutes, a minimum of 13.4 and a maximum of 58.5, against 38, 13 and 59 measured. The spread comes from two things, the length of your first chapter (6 years for a Sun nakshatra, 20 for a Venus one) and the Moon's speed on the day, which ranges from 11.77 to 15.39 degrees a day.

There is a sharper edge on top of that. If the Moon was near the boundary of a nakshatra when you were born, a small error does not slide the ladder, it replaces it, because the first chapter's lord changes and so does every chapter after it. 1.34% of charts sit within ten minutes of that edge and 8.16% within an hour. Our free kundli tool prints the Moon's exact degree, so this is checkable in a minute: if the Moon is inside the first or last half degree of its nakshatra, get the birth time confirmed before acting on any date.

The practical rule follows without much interpretation. If your birth time comes from a hospital record or a birth certificate, the dated windows are usable as dated windows. If it is a family recollection to the nearest half hour, read the structure and the transit table as they stand, and read the ladder as a season rather than a date: a window of 159 days with a month of uncertainty either side is still a season you can plan inside, while a 30-day pratyantar with the same uncertainty is not a date at all.

If the time is unknown entirely, both halves go. There is no rising sign to count houses from, so the standard fallback counts them from the Moon's sign instead, which is a different claim and should be labelled as one. And the ladder goes with it, which is the part that gets missed: the Moon covers about 13 degrees in a day and a nakshatra is 13 degrees 20 minutes wide, so a day without a time leaves the birth nakshatra as one of two neighbours. Substituting noon for the real time across 20,000 charts got the first chapter's lord right 75.2% of the time, and even in those cases the later chapter boundaries came out a median of 833 days away from the true ones. A ladder built on a placeholder time is not a rough version of the real one. It is a different ladder.

The questions this page does not answer, and why

"Will I need medical assistance, or is natural possible?" This was asked in those words, and it has no answer here. The 5th house is read for timing and for the subject's place in the chart. Nothing in the classical material maps onto a tubal factor or a sperm count or an AMH level, and any reading that produces a confident answer to this has invented it. The people who can answer it have the tests.

"Will the transfer in October work?" The outcome of a cycle is not something the chart holds. What the chart does hold is whether October falls inside one of your marked sub-periods and whether a transit is on the 5th house that month, and those two are answerable to the day. For chart one the answer would be: yes on the first count, since October 2026 sits inside the Jupiter pratyantar that runs 28 September to 10 December, and no on the second, since Jupiter's transit does not reach the 5th house until 1 November. So one layer is on through the whole of October and the other arrives at the end of it. That is a specific, checkable answer to a question about a month, and it is a statement about the month rather than about the cycle.

"Are children promised in my chart?" The word promised asks for a guarantee, and the computation produces something else. What it produces is how much of the chart is attached to the 5th house, which runs from one planet holding every role, as in chart two, down to the two-planet list that 53.0% of charts have, and then the dates of the periods those planets run. That is a description of a structure and a calendar. Treating it as a guarantee, in either direction, adds a claim the arithmetic never made.

"How many, and boy or girl?" Neither number is computed anywhere in AstroMedha's engine, so neither appears on this page or in the report. The rule we hold to is that a figure gets published when the computation produces it and not otherwise, and these two do not come out of the 5th house, the D-7 or the ladder.

Read your own ladder

The structure half of this page needs only a computed chart, and you can get one without an account.

• The free kundli tool returns your rising sign with its degree, and every planet with its sign, exact degree, nakshatra, pada and whole-sign house. From it you can read your 5th sign, look the 5th lord up in the table above, see who is sitting in the 5th, and check where Jupiter is. That is the whole timer list.
• The free dasha tool returns the mahadasha, antardasha and pratyantar running today with their start and end dates, plus the chapters still to come. It is the check on your own arithmetic in step four.
• The free nakshatra tool returns your Moon's nakshatra and pada, which is the input to the whole ladder and to the birth-time sensitivity check above.

With those three you can build the next thirty-six months by hand. It takes about an hour and the arithmetic is on this page.

What an account adds is the two halves computed together. With your birth details saved, the 5th lord's dignity, the dispositor (the ruler of the sign your 5th lord sits in, which carries its business onward), the aspects landing on your 5th house and the D-7 Saptamsha positions are all computed on one chart rather than looked up separately, and Chart Chat answers follow-up questions against your own numbers, so "which of my two timers is doing more work here" becomes a question with an answer rather than a general rule.

If you want the calendar scored rather than assembled, the Children and Fertility report reads the 5th house with its lord and that lord's condition, whatever occupies the house, Jupiter as significator and the D-7, then scores every mahadasha and antardasha pair across the fertile span on whether the planets running carry your 5th house, and lays Jupiter's real transit dates over the same axis. It works at chapter and sub-chapter depth rather than at the pratyantar depth this page works through by hand, and it reports windows rather than outcomes, which is the same boundary drawn at the top of this page.

Related reading

• What Is Vimshottari Dasha
• Signs of a Good Dasha Period
• Yoga for Children in Kundli
• Delay in Childbirth in Astrology
• The D-7 Saptamsa Chart
• Jupiter in the 5th House
• Saturn in the 5th House
• Rahu in the 5th House
• Jupiter Mahadasha and Children
• Saturn Mahadasha and Children
• Rahu Mahadasha and Children
• Jupiter Transit in Leo
• Saturn Transit in Aries
• Should I Have Children Now or Wait
• The Quiet Grief of Infertility
• More on how a chart is put together: Vedic insights

Method note. Every sign, degree, nakshatra, pada, dignity, aspect, D-7 position, dasha boundary and transit ingress on this page was computed with AstroMedha's sidereal Vedic engine using the Lahiri ayanamsa and the Swiss Ephemeris, with mean nodes and whole-sign houses. Transit ingress dates were found by day-resolution binary search over the ephemeris rather than taken from a table of approximate years, and the transit scan runs from 26 August 2026 to 26 August 2029, so a window touching the closing date is cut there.

Population figures come from 100,000 charts generated on 26 August 2026 with seed 20260826: birth dates uniform over 1985 to 2003, clock times uniform over the day, birthplaces drawn uniformly from ten Indian cities, percentages taken over charts with a computed ascendant. The birth-time sensitivity figures come from a 5,000-chart measurement of the same population, a 60,000-chart analytic run of the closed form which agrees with it to within half a day at the median, and a 20,000-chart comparison of a noon placeholder against the recorded time.

Timing is what a chart carries. Anything to do with fertility itself belongs with your doctor, who can see what a period calendar has no access to.

Yoga means a named combination of planets the tradition reads as a unit.