How often does Purnima occur?

Once every lunar month, roughly every 29.5 days.

Do different Purnimas have different names?

Yes — depending on which lunar month it falls in, a Purnima carries its own traditional name and significance (e.g. Buddha Purnima, Guru Purnima, Sharad Purnima).

Why might this differ by a day from another source?

This uses a fixed midday reference instant rather than the exact moment of full moon — a date very close to that transition can occasionally shift by a day.

Is Purnima the same as a full moon seen anywhere in the world?

The astronomical full moon (exact Sun-Moon opposition) is a single global instant; Purnima is the Hindu calendar's Tithi-based day containing (or closest to) that instant, referenced to Indian Standard Time.

Can I search from a future date?

Yes — enter any starting date, and the tool finds the next 6 Purnima occurrences from that point forward.

What comes before Purnima?

Chaturdashi, the 14th Tithi — and the day after Purnima begins Krishna Paksha (the waning half) with Pratipada.

How is the date calculated?

By computing the real lunar Tithi (Moon-Sun angular distance, sidereal, Lahiri ayanamsa) day-by-day from the start date until Shukla Paksha's 15th Tithi is found.

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Hindu Tools

Purnima Date Calculator

The next 6 Purnima (full moon) dates from any starting date.

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Last reviewed 2026-09-06

About the Purnima Date Calculator

Finds the next 6 Purnima (full moon) dates from any starting date.

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How to use it

Enter a starting date (defaults to today).
Read the next 6 calculated Purnima dates.

Formula

Purnima is the 15th Tithi of Shukla Paksha (full moon) — found by searching forward day-by-day from the given start date for the next date whose Tithi matches.

Worked example

From 7 September 2026, the next 6 Purnimas are calculated as: 26 Sep, 25 Oct, 24 Nov, 23 Dec, 22 Jan 2027, 20 Feb 2027.

A few named Purnimas through the year

A few named Purnimas through the year
Name	Month (approx.)	Significance
Buddha Purnima	Vaishakha (April-May)	Marks Buddha's birth, enlightenment, and death
Guru Purnima	Ashadha (June-July)	Honors teachers and spiritual guides
Sharad Purnima	Ashwin (September-October)	Post-monsoon harvest full moon, associated with Krishna's Raas Leela
Kartik Purnima	Kartik (October-November)	Also called Dev Diwali; marks the end of the Kartik month observances
Holika Dahan (Phalguna Purnima)	Phalguna (February-March)	The Holi bonfire — see the dedicated Holi Date Calculator

Interpreting your result

This is a calculated approximation using a fixed India Standard Time midday reference; the exact moment of full moon can fall at any time of day, so a date very close to the transition can occasionally differ by a day from another source.

Recommendations

• Purnima and Amavasya (new moon) together mark the two poles of each lunar month — see the Amavasya Date Calculator for the complementary new-moon dates.

Frequently asked questions

The full moon Tithi — the 15th Tithi of Shukla Paksha, when the Moon's sidereal longitude is exactly 180° from the Sun's.