Panchang in Sevan, Gegharkunik, Armenia Wed 13 Nov 1963

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 03:35 on Wed 13 Nov to 05:49 on Thu 14 Nov, so only Wednesday’s pradosha (17:45–20:32) falls within it. No text giving Pradosh Vrat’s time was found; pradosha is Tithika’s convention.

Pradosh Vrat: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 324°–336° is the 28th, Krishna Trayodashi. A day takes the tithi in force at its sunrise, 07:42 here. Dwadashi ended at 03:35, before it. Trayodashi ends at 05:49 Thu, when the lead reaches 336°. The lead passed 180° at the full moon of 1 Nov, so the Moon is waning: Krishna paksha.

The night of Tue 12 Nov ran from sunset 17:46 Tue to sunrise 07:42, 13 h 56 m. Cut into 15 muhurtas of 55 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:42 to 17:45, splits into 8 choghadiyas of 1 h 15 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:45 to 07:44 Thu, splits into 8 choghadiyas of 1 h 44 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′. Hasta spans 160°00′–173°20′; the Moon entered its pada 4 at 170°. It leaves at 09:13, for Chitra.

Add the Sun's and the Moon's places among the stars: 206.7° + 172.6° = 379.3°, one full turn and 19.3°. 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 21:22, then Ayushmana.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Trayodashi is Garaja and the second Vanija. Garaja runs until 16:40, when the lead reaches 330°; Vanija until 05:49 Thu.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:42 to 07:44 Thu, so the hours after midnight still belong to Budhawara.

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 16 Nov, with the Sun in Tula, begins Kartika (Adhik). Until then this Krishna paksha reads Kartika (Adhik) here, and Kartika (Adhik) in the amanta count.

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 225.9° round the stars. Vikram Samvat numbers that year 2020; Shaka Samvat numbers it 1885.