Vedic sun sign dates: sidereal zodiac sign dates
In the sidereal (fixed-star based) zodiac, the Sun enters a new sign around the 12th to 18th of each month, spending about a month in each. On a change day, the exact entry time decides which sign a birth falls in.
You'll learn
- When the Sun enters each sidereal sign
- Why birth time matters on change days
- How sidereal and tropical dates differ
- What sankranti means
- Sun sign, moon sign or lagna
Before thisWhy is my sign different in Vedic astrology?
How to read the dates
In the sidereal zodiac, the Sun changes sign around the 12th to 18th of each month. The exact dates shift by about a day between years.
Reading the entry table row by row
The table lists the usual date the Sun enters each of the twelve sidereal signs, computed by Skybond using the True Chitra Paksha ayanamsa and Indian Standard Time.
Take one row as an example: the Sun usually enters Cancer on 16 July. The last column shows the entry dates across every year from 2000 to 2050, which for Cancer is 16 or 17 July.
That range exists because the Sun takes about 30 days to cross each sign, so it spends about a month in each, and the entry dates drift slightly from year to year. So treat these dates as close for any year, not fixed for every year.
If you were born well away from these dates, the table alone tells you your Vedic sun sign. If you were born on or near one, read the next section.
Born on a change day
Exact entry times for the calendar year load here, computed from Skybond's ephemeris (True Chitra Paksha, IST) each time the block refreshes. The table above gives the usual dates.
On the day the Sun changes sign, the time of birth decides the sign. The entry time, not the date, is what counts.
Why the entry time decides the sign
For example, if the Sun enters Cancer at 23:30 IST on 16 July, a birth earlier that day in India has the Sun in Gemini, and a birth after that time has the Sun in Cancer. The live block below gives the exact entry times for the calendar year.
One more thing matters near a boundary: the ayanamsa, the measured gap between the two zodiacs, is about 24 degrees in the early 21st century, and the exact value used decides which side of a boundary a birth falls on. Different ayanamsas can move these entry dates slightly. Skybond uses True Chitra Paksha.
So if your birth falls on a change day, check the entry time for your birth year against your birth time, and remember that another ayanamsa could place a very near-boundary birth in the neighbouring sign.
Why these dates differ from Western ones
- Outer ring: sidereal zodiac (Vedic)
- Inner ring: tropical zodiac (Western)
- Arc: the gap of about 24° (ayanamsa)
- 10° Leo (tropical) = about 16° Cancer (sidereal)
Western astrology uses the tropical zodiac, anchored to the March equinox. Vedic astrology uses the sidereal zodiac, and the two have drifted about 24 degrees apart.
Tropical versus sidereal, in plain words
Western astrology commonly uses the tropical (sayana) zodiac, anchored to the March equinox. Vedic astrology uses the sidereal (nirayana) zodiac, anchored to the fixed stars.
The gap between the two, called the ayanamsa, is about 24 degrees in the early 21st century. The wheel below shows what that means in practice: a planet at 10 degrees Leo in the tropical zodiac sits at about 16 degrees Cancer in the sidereal zodiac.
Because of this gap, the Vedic sun sign is often one sign earlier than the Western one, but not always. Someone born near a boundary in either system can land on the same sign in both.
Neither zodiac is the correct one and neither is mistaken. Each system reads its own chart on its own terms.
Sankranti: the Sun's entry days
The Sun's entry into a new sign is called Sankranti. The entry into Capricorn is celebrated in south India as Makara Sankranti, or Pongal.
What the word sankranti means
Sankranti means the entry of the Sun (Surya) into a new sign (rashi). The Brihat Parashara Hora Shastra (BPHS, R. Santhanam's translation), a classical Sanskrit text, defines it in chapter 90 as 'Sankranti (entry of Sūrya in a new Rāśi)'.
P.V.R. Narasimha Rao (PVR), author of Vedic Astrology: An Integrated Approach, notes that the Sun's entry into Capricorn is celebrated in south India as 'Makara Sankraanthi' or 'Makara Sankramanam' or 'Pongal'. It falls on 14 or 15 January, the Capricorn row in the table above.
So each of the twelve entry dates on this page is a sankranti day.
Sun sign, moon sign or lagna
Sun sign
The Sun's sign: the dates on this page
Moon sign (rashi)
The Moon's sign; what 'your rashi' usually means in India
Ascendant (lagna)
The sign rising in the east at birth; needs a birth time
'Sign' can mean three different things in a Vedic chart. The sun sign is only one of them, and it does not give you the other two.
Three things 'sign' can mean
In Vedic astrology, 'sign' can mean three things:
- The sun sign: the sign the Sun occupied at birth, which is what the dates on this page give you.
- The moon sign (rashi): the sign the Moon occupied. In India, 'your rashi' usually means this.
- The Vedic ascendant (lagna): the sign rising on the eastern horizon at the moment of birth. This needs a birth time.
The sun sign alone does not give the moon sign or the lagna. Those need the birth date, time and place.
Skybond's site suggests that if you only know your sun sign, reading it as your ascendant is a fine place to start. Skybond's transit articles at /transits/ are written per ascendant.
Check yourself
You were born in India at 2 in the afternoon on a day when the Sun entered Cancer at 23:30 IST. Which sidereal sign is your Sun in?
Show answer
Gemini. The Sun entered Cancer late that evening, so any birth earlier in the day falls in Gemini.
Your Western sun sign is Leo. Will your Vedic sun sign always be one sign earlier?
Show answer
Often, but not always. The ayanamsa gap is about 24 degrees, so a birth near a boundary can land on the same sign in both zodiacs.
You know your Vedic sun sign from the table. Can you work out your moon sign from it?
Show answer
No. The sun sign alone does not give the moon sign or the lagna; those need the birth date, time and place.
Key takeaways
- The Sun changes sidereal sign around the 12th to 18th of each month.
- On a change day, the entry time decides the sign, not the date.
- The sidereal and tropical zodiacs are about 24 degrees apart.
- Each entry day is a sankranti; Capricorn's is Makara Sankranti.
- Sun sign, moon sign and lagna are three different things.
Next lessons
Conventions and sources
- Sidereal zodiac
- True Chitra Paksha ayanamsa
- Whole-sign houses
Skybond uses the sidereal zodiac, the True Chitra Paksha ayanamsa and whole-sign houses.
Sources for this page
- B.V. Raman, Hindu Predictive Astrology
- P.V.R. Narasimha Rao, Vedic Astrology: An Integrated Approach
- AstroCentral, Sidereal and Tropical: Why the Systems Differ (26 Jun 2026)
- Skybond chart engine documentation (jyotishganit) (internal documentation)
- Skybond ascendant calculator and FAQ
- Skybond transits by ascendant (getskybond.com/transits)
- Sun's sidereal sign-change dates, 2000 to 2050 (True Chitra Paksha), IST (Skybond calculation with the Swiss Ephemeris)
FAQ
What are the Vedic sun sign dates?
In the sidereal zodiac the Sun enters a new sign around the 12th to 18th of each month. Through the calendar year the entries run from Capricorn on 14 or 15 January to Sagittarius on 15 or 16 December, and the dates shift by about a day between years.
Why is the Vedic sun sign different from the Western one?
Western astrology uses the tropical zodiac, anchored to the March equinox, while Vedic astrology uses the sidereal zodiac. The gap, the ayanamsa, is about 24 degrees in the early 21st century, so the Vedic sign is often one earlier, though not always.
What is Makara Sankranti?
Sankranti means the Sun's entry into a new sign, and Makara Sankranti is the entry into Capricorn. It falls on 14 or 15 January, and it is celebrated in south India as Makara Sankramanam or Pongal.
Is the Vedic sun sign the same as the rashi?
No. 'Your rashi' usually means the moon sign, the sign the Moon occupied at birth. The sun sign is the Sun's sign, and knowing it does not tell you the moon sign or the lagna.
Drafted with AI from verified sources, fact-checked and edited by Skybond before publishing. Read more.