Panchang in Sevan, Gegharkunik, Armenia Sat 30 Jul 1977

Purnima follows the tithi at sunrise. Purnima runs from 17:46 on Fri 29 Jul to 14:52 on Sat 30 Jul, so it holds sunrise only on Sat 30 Jul, at 05:54. 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, 05:54 here. Chaturdashi ended at 17:46 Fri, before it. Purnima ends at 14:52, when the lead reaches 180°. The lead passed 0° at the new moon of 16 Jul, so the Moon is waxing: Shukla paksha.

The night of Fri 29 Jul ran from sunset 20:18 Fri to sunrise 05:54, 9 h 36 m. Cut into 15 muhurtas of 38 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:54 to 20:17, 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, 20:17 to 05:55 Sun, 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′. Uttara Ashadha spans 266°40′–280°00′; the Moon entered its pada 4 at 276°40′. It leaves at 08:54, for Shravana.

Add the Sun's and the Moon's places among the stars: 103.3° + 278.2° = 381.5°, one full turn and 21.5°. 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 14:00, 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 04:16, when the lead reached 174°; Bava runs until 14:52.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:54 to 05:55 Sun, so the hours after midnight still belong to Shaniwara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 16 Jul 12:36 Sat to 15 Aug 01:31 Mon the Sun stayed in Karka, entering Simha at 16 Aug 17:07 Tue, 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 16 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: 19 Mar 1977, 22:32 Sat. Since then the Sun has moved 127.8° round the stars. Vikram Samvat numbers that year 2034; Shaka Samvat numbers it 1899.