Panchang in Sevan, Gegharkunik, Armenia Mon 31 Jul 1939

Purnima follows the tithi at sunrise. Purnima runs from 07:30 on Sun 30 Jul to 09:36 on Mon 31 Jul, so it holds sunrise only on Mon 31 Jul, at 04:54. No text giving Purnima’s time was found; sunrise is Tithika’s convention.

Purnima: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 168°–180° is the 15th, Shukla Purnima. A day takes the tithi in force at its sunrise, 04:54 here. Chaturdashi ended at 07:30 Sun, before it. Purnima ends at 09:36, when the lead reaches 180°. The lead passed 0° at the new moon of 17 Jul, so the Moon is waxing: Shukla paksha.

The night of Sun 30 Jul ran from sunset 19:18 Sun to sunrise 04:54, 9 h 36 m. Cut into 15 muhurtas of 38 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 04:54 to 19:17, splits into 8 choghadiyas of 1 h 47 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:17 to 04:55 Tue, splits into 8 choghadiyas of 1 h 12 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Shravana spans 280°00′–293°20′; the Moon entered its pada 1 at 280°. It leaves at 04:05 Tue, for Dhanishtha.

Add the Sun's and the Moon's places among the stars: 104° + 281.8° = 385.8°, one full turn and 25.8°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 13°20′–26°40′ is the 2nd, Priti. It ends at 06:34, then Ayushmana.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Purnima is Vishti and the second Bava. Vishti ended at 20:32 Sun, when the lead reached 174°; Bava runs until 09:36.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 04:54 to 04:55 Tue, so the hours after midnight still belong to Somawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 17 Jul 00:02 Mon to 15 Aug 06:53 Tue the Sun stayed in Karka, entering Simha at 16 Aug 22:26 Wed, after the new moon. A month with no sankranti is Adhika Shravana, before Shravana itself.

A purnimanta month runs from full moon to full moon, so its waning half comes first. It shares its name with the amanta month that its second half falls in: the new moon of 17 Jul, with the Sun in Karka, began Shravana (Adhik). This Shukla paksha reads Shravana (Adhik) in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 21 Mar 1939, 04:49 Tue. Since then the Sun has moved 127.5° round the stars. Vikram Samvat numbers that year 1996; Shaka Samvat numbers it 1861.