| Date | Purnima | Tithi (local) | Notes |
|---|---|---|---|
| Friday, January 22, 2027 | Pausha Purnima Vrat | Jan 22, 12:01 AM → Jan 22, 8:17 PM | Vrat & Snan-Daan same day |
| Saturday, February 20, 2027 | Magha Purnima Vrat | Feb 19, 1:45 PM → Feb 21, 7:24 AM | Vrat & Snan-Daan same day |
| Monday, March 22, 2027 | Phalguna Purnima Vrat | Mar 21, 8:52 PM → Mar 22, 6:44 PM | Vrat & Snan-Daan same day |
| Tuesday, April 20, 2027 | Chaitra Purnima Vrat | Apr 19, 8:39 AM → Apr 21, 6:27 AM | Vrat & Snan-Daan same day |
| Thursday, May 20, 2027 | Vaishakha Purnima Vrat | May 19, 6:33 PM → May 20, 6:59 PM | Vrat & Snan-Daan same day |
| Friday, June 18, 2027 | Jyeshtha Purnima Vrat | Jun 18, 7:05 AM → Jun 19, 8:44 AM | Snan-Daan (Udaya): Jun 19 |
| Sunday, July 18, 2027 | Ashadha Purnima Vrat | Jul 17, 9:19 PM → Jul 18, 11:45 PM | Vrat & Snan-Daan same day |
| Monday, August 16, 2027 | Shravana Purnima Vrat | Aug 16, 12:59 PM → Aug 17, 3:29 PM | Snan-Daan (Udaya): Aug 17 |
| Wednesday, September 15, 2027 | Bhadrapada Purnima Vrat | Sep 15, 5:19 AM → Sep 16, 7:04 AM | Vrat & Snan-Daan same day |
| Friday, October 15, 2027 | Ashwina Purnima Vrat | Oct 14, 9:20 PM → Oct 15, 9:47 PM | Vrat & Snan-Daan same day |
| Saturday, November 13, 2027 | Kartika Purnima Vrat | Nov 13, 12:26 PM → Nov 14, 11:26 AM | Snan-Daan (Udaya): Nov 14 |
| Monday, December 13, 2027 | Margashirsha Purnima Vrat | Dec 13, 2:26 AM → Dec 14, 12:09 AM | Vrat & Snan-Daan same day |
Vrat / Satyanarayan puja on the day Purnima prevails at local midday; Snan-Daan on the Udaya-tithi day.
The Moon is at full strength on Purnima — its influence on the mind (Moon) is intense, hence the vrat's restraint and the Moon arghya; the most auspicious day for Vishnu puja and the Satyanarayan katha (Skanda Purana, Reva Khanda) — the katha may be held on any day but Purnima and the Sankranti are best; the fruit of the Purnima bath (Ganga-Yamuna-Narmada) and charity is multiplied.
The vrat rule: the Purnima by the udaya tithi or moonrise-vyapini — the fast on the udaya tithi day, the Satyanarayan katha and Moon arghya on the evening when the Purnima is present at moonrise (usually the same day; sometimes a day earlier — the list above follows the udaya rule, choose the katha evening from the tithi window); paran after seeing the Moon or the next morning.
12 in Malaysia (Kuala Lumpur). Lunar months do not align with the calendar year, so the count can be 11 or 13.
0 of the 12 dates differ from India for Kuala Lumpur, because the tithi is judged at the local moment (sunrise/moonrise/Pradosh) and Malaysia is hours away from India in time.
The katha may be held on any auspicious day (housewarming, wedding, birthday, the fulfilment of a vow) — but Purnima, the Sankranti, Ekadashi and Thursday are best; on Purnima both Vishnu-Lakshmi and the Moon are strong; if one has vowed a monthly katha, on the evening of every Purnima; if there is no priest anyone in the family may read it.
In the Satyanarayan katha the prasad is 'savaya' (sava pav/sava kilo/sava paanch) — a little more than the whole — a symbol of gratitude and increase; in the katha the merchant Sadhu suffered for forgetting his vow, hence the vowed prasad is savaya; the measure of the panjiri (semolina-ghee-sugar-banana-Tulsi), the panchamrit too is sava.
Yes — there is no rice ban on Purnima as on Ekadashi; fruit in the vrat (fruit-milk-sabudana-makhana), kheer-poori-sabzi-rice after seeing the Moon; waterless only for the healthy and vowed; the prasad (panjiri-panchamrit) first.