Panchang in Sevan, Gegharkunik, Armenia Thu 18 Dec 1980

Gita Jayanti follows the tithi at sunrise. Ekadashi runs from 12:16 on Wed 17 Dec to 09:30 on Thu 18 Dec, so it holds sunrise only on Thu 18 Dec, at 08:18. No text giving Gita Jayanti’s time was found; sunrise is Tithika’s convention.

Gita Jayanti: every date in Sevan

Smartas test Ekadashi at sunrise: it holds sunrise on Thu 18 Dec only, at 08:18: Thu 18 Dec. Vaishnavas test arunodaya: Dashami ended at 12:16 Wed, before it (06:42–08:18).

Mokshada Ekadashi: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 120°–132° is the 11th, Shukla Ekadashi. A day takes the tithi in force at its sunrise, 08:18 here. Dashami ended at 12:16 Wed, before it. Ekadashi ends at 09:30, when the lead reaches 132°. The lead passed 0° at the new moon of 7 Dec, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Dwadashi began at 09:30 and ended at 06:33 Fri, between the sunrises of 08:18 and 08:18 Fri. Thursday reads Ekadashi and Friday reads Trayodashi: Dwadashi is a kshaya tithi here.

The night of Wed 17 Dec ran from sunset 17:34 Wed to sunrise 08:18, 14 h 44 m. Cut into 15 muhurtas of 58 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 08:18 to 17:35, splits into 8 choghadiyas of 1 h 9 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:35 to 08:18 Fri, splits into 8 choghadiyas of 1 h 50 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′. Bharani spans 13°20′–26°40′; the Moon entered its pada 1 at 13°20′. It leaves at 04:46 Fri, for Krittika.

Add the Sun's and the Moon's places among the stars: 242.8° + 14.1° = 256.9°. The sum, cut into 27 parts of 13°20′, gives the yoga: 253°20′–266°40′ is the 20th, Shiva. It ends at 23:08, then Siddha.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Ekadashi is Vanija and the second Vishti. Vanija ended at 22:55 Wed, when the lead reached 126°; Vishti runs until 09:30.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 08:18 to 08:18 Fri, so the hours after midnight still belong to Guruwara.

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: Vrishchika gives Margashirsha. The Sun enters Dhanu on 15 Dec, inside the month. The next new moon, 6 Jan, finds it in Dhanu and begins Pausha.

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 7 Dec, with the Sun in Vrishchika, began Margashirsha. This Shukla paksha reads Margashirsha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 16 Mar 1980, 22:55 Sun. Since then the Sun has moved 270° round the stars. Vikram Samvat numbers that year 2037; Shaka Samvat numbers it 1902.