Panchang in Sevan, Gegharkunik, Armenia Tue 26 Oct 1920

Sharad Purnima’s night centres on nishitha, the midnight muhurta. Purnima runs from 18:54 on Tue 26 Oct to 17:06 on Wed 27 Oct, so only Tuesday night’s nishitha (23:15–00:08 Wed) falls within it. No text giving Sharad Purnima’s time was found; nishitha is Tithika’s convention.

Sharad Purnima: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 156°–168° is the 14th, Shukla Chaturdashi. A day takes the tithi in force at its sunrise, 06:22 here. Trayodashi ended at 20:11 Mon, before it. Chaturdashi ends at 18:56, when the lead reaches 168°. The lead passed 0° at the new moon of 12 Oct, so the Moon is waxing: Shukla paksha.

The night of Mon 25 Oct ran from sunset 17:06 Mon to sunrise 06:22, 13 h 16 m. Cut into 15 muhurtas of 53 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:22 to 17:05, splits into 8 choghadiyas of 1 h 20 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:05 to 06:23 Wed, splits into 8 choghadiyas of 1 h 39 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′. Revati spans 346°40′–360°00′; the Moon entered its pada 2 at 350°. It leaves at 22:05, for Ashwini.

Add the Sun's and the Moon's places among the stars: 189.7° + 351° = 540.7°, one full turn and 180.7°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 173°20′–186°40′ is the 14th, Harshana. It ends at 16:10, then Vajra.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Chaturdashi is Garaja and the second Vanija. Garaja runs until 07:38, when the lead reaches 162°; Vanija until 18:56.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:22 to 06:23 Wed, so the hours after midnight still belong to Mangalawara.

An amanta month runs from new moon to new moon and takes its name from the rashi the Sun is in at the new moon that begins it: Kanya gives Ashwina. The Sun enters Tula on 16 Oct, inside the month. The next new moon, 10 Nov, finds it in Tula and begins Kartika.

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 12 Oct, with the Sun in Kanya, began Ashwina. This Shukla paksha reads Ashwina in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 20 Mar 1920, 13:55 Sat. Since then the Sun has moved 212.9° round the stars. Vikram Samvat numbers that year 1977; Shaka Samvat numbers it 1842.