Panchang in Sevan, Gegharkunik, Armenia Fri 1 Nov 1963

Purnima follows the tithi at sunrise. Purnima runs from 21:44 on Thu 31 Oct to 17:55 on Fri 1 Nov, so it holds sunrise only on Fri 1 Nov, at 07:28. 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, 07:28 here. Chaturdashi ended at 21:44 Thu, before it. Purnima ends at 17:55, when the lead reaches 180°. The lead passed 0° at the new moon of 17 Oct, so the Moon is waxing: Shukla paksha.

The night of Thu 31 Oct ran from sunset 17:59 Thu to sunrise 07:28, 13 h 29 m. Cut into 15 muhurtas of 53 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:28 to 17:57, splits into 8 choghadiyas of 1 h 18 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:57 to 07:30 Sat, splits into 8 choghadiyas of 1 h 41 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′. Ashwini spans 0°00′–13°20′; the Moon entered its pada 3 at 6°40′. It leaves at 15:11, for Bharani.

Add the Sun's and the Moon's places among the stars: 194.6° + 8.4° = 203°. The sum, cut into 27 parts of 13°20′, gives the yoga: 200°00′–213°20′ is the 16th, Siddhi. It ends at 22:36, then Vyatipata.

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 runs until 07:50, when the lead reaches 174°; Bava until 17:55.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:28 to 07:30 Sat, so the hours after midnight still belong to Shukrawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 17 Oct 16:42 Thu to 16 Nov 10:50 Sat the Sun stayed in Tula, entering Vrishchika at 16 Nov 14:39 Sat, after the new moon. A month with no sankranti is Adhika Kartika, before Kartika 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 Oct, with the Sun in Tula, began Kartika (Adhik). This Shukla paksha reads Kartika (Adhik) in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 25 Mar 1963, 16:09 Mon. Since then the Sun has moved 213.8° round the stars. Vikram Samvat numbers that year 2020; Shaka Samvat numbers it 1885.