When Does a Planet Change Sign? (Transit)
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This tool shows the sign-change dates of the chosen planet. It adds its house from your Moon sign and the classical result.
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The short answer: planets stay in a sign for different times: the Sun about a month, Mars about a month and a half, Jupiter about a year, Saturn about two and a half years. But when retrograde, planets also go back to the previous sign, so the right dates do not come from a plain count. The tool gives the right dates from the engine, and also in which house from your Moon sign that planet is (as per Phaladeepika). Choose the planet above, then read below.
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How It Is Calculated
- The sidereal sign of the planet was tracked hour by hour and the exact change time found.
- The house was counted from your Moon sign.
- All times are shown in Indian Standard Time (IST).
For Astrologers: Classical Basis
Transits are seen from the natal Moon sign.
— Source: Phaladeepika, chapter 26, verse 1
Good transit houses from the Moon (like Jupiter 2/5/7/9/11, Saturn 3/6/11) — when there is no vedha at that time.
— Source: Phaladeepika, chapter 26, verse 2
How To Read Your Result · When Does a Planet Change Sign?
| Result | What It Means |
|---|---|
| Sign-change date | The right date and time of every change, including going back when retrograde |
| House from your Moon sign | In which of the 1 to 12 houses from your Moon sign that planet is, and whether the house is held favourable |
| Classical result | By the favourable-house list of Phaladeepika, a hint of light or heavy. It is not a sure prediction |
How Planets Change Signs · When Does a Planet Change Sign?
Transit is seen from the birth Moon sign. Source: Phaladeepika, chapter 26, verse 1 Each planet has some favourable houses: like 2, 5, 7, 9, 11 for Jupiter and 3, 6, 11 for Saturn. Source: Phaladeepika, chapter 26, verse 2
An example of Saturn (from our engine, Lahiri): in Pisces from 30 March 2025 to 3 June 2027. Then it enters Aries on 3 June 2027, returns to Pisces on 20 October 2027, goes again to Aries on 24 February 2028 and stays till 9 August 2029.
So the count of "two and a half years in a sign" for Saturn is a rough guess. Because of retrograde the real dates go to and fro.
The Sun and Moon are never retrograde, so their dates run straight. Rahu–Ketu always move backwards.
Our Count · When Does a Planet Change Sign?
With the astronomy engine we counted the sign changes of every planet from 2000 to 2059, including those going back when retrograde.
The average gap between two changes: Sun 30 days, Venus 29, Mercury 25, Mars 53, Jupiter 205 and Saturn 421 days.
The averages of Jupiter and Saturn came below the plain count (365 and 880 days), because to-and-fro changes near the border during retrograde were counted.
The meaning: a panchang that gives the date of a planet’s sign change often sees it go back and change again later. So see the right dates from the tool.
Common Beliefs And The Truth · When Does a Planet Change Sign?
| Common Belief | The Truth |
|---|---|
| Saturn stays exactly two and a half years in a sign | It is a rough guess. Because of retrograde the real dates differ. |
| The effect begins as soon as a planet changes sign | In tradition the effect of a transit is read from the house from the Moon sign, and it changes slowly. |
| Every transit is either good or bad | In Phaladeepika each planet has many favourable houses, and ashtakavarga points also change the effect. |
| Rahu–Ketu move straight | They always move backwards. |
What To Do Now: 5 Steps · When Does a Planet Change Sign?
- Choose the planet and year above.
- See the sign-change dates.
- Add your Moon sign and see the planet’s house and the classical result.
- Also see Today’s Transit.
- For direct advice ask Pandit ji. The first pack is free.
For Astrologers: A Checklist · When Does a Planet Change Sign?
- Transit from the birth Moon. Source: Phaladeepika, chapter 26, verse 1
- Favourable houses (from the Moon): Su 3,6,10,11; Mo 1,3,6,7,10,11; Ma 3,6,11; Me 2,4,6,8,10,11; Ju 2,5,7,9,11; Ve 1,2,3,4,5,8,9,11,12; Sa 3,6,11; Ra/Ke 3,6,10,11. Source: Phaladeepika, chapter 26, verse 2
- Saturn (sidereal, Lahiri): Pisces 2025-03-30 to 2027-06-03; Aries 2027-06-03, back in Pisces 2027-10-20, Aries 2028-02-24 to 2029-08-09.
- Frequency (VedicDost count, 2000–2059, mean gap between sign changes): Su 30; Ve 29; Me 25; Ma 53; Ju 205; Sa 421 days.
Keep in Mind
This result shows a tilt in timing and planet positions, not a guarantee. Planets show direction; effort and good deeds take you forward. For health, money or legal matters, ask an expert.
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Frequently Asked Questions
How to see the date of a planet’s sign change?
Choose the planet and year above. The tool gives the right dates from the engine.
When will Saturn change sign?
Saturn goes into Aries on 3 June 2027, returns to Pisces on 20 October 2027 and goes again into Aries on 24 February 2028.
How does retrograde affect the date?
When retrograde a planet may return to the previous sign, so the dates go to and fro.
From which sign to see the transit?
From the birth Moon sign, as Phaladeepika says.
Which are the favourable houses?
Different for each planet; like 2, 5, 7, 9, 11 for Jupiter and 3, 6, 11 for Saturn.
When do Rahu–Ketu change?
About every one and a half years, and always backwards.
Why does the Sun change every month?
The Sun crosses a sign in about 30 days. This is the Sankranti.
Are the dates the same for all cities?
The time is given in Indian time. The moment of the sign change is the same for all.
Where to see the Sade Sati dates?
See the Sade Sati dates in the calculator by choosing your Moon sign.
Today’s position?
The Today’s Transit Calculator gives the house each planet is in today.
✍️ Prepared and checked by: VedicDost Editorial Team