Panchang in Sevan, Gegharkunik, Armenia Wed 10 May 1972

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 19:25 on Wed 10 May to 15:51 on Thu 11 May, so only Wednesday’s pradosha (20:04–22:01) 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: 312°–324° is the 27th, Krishna Dwadashi. A day takes the tithi in force at its sunrise, 05:48 here. Ekadashi ended at 22:34 Tue, before it. Dwadashi ends at 19:25, when the lead reaches 324°. The lead passed 180° at the full moon of 28 Apr, so the Moon is waning: Krishna paksha.

The night of Tue 9 May ran from sunset 20:03 Tue to sunrise 05:48, 9 h 45 m. Cut into 15 muhurtas of 39 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:48 to 20:04, 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, 20:04 to 05:47 Thu, 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 Bhadrapada spans 333°20′–346°40′; the Moon entered its pada 3 at 340°. It leaves at 13:07, for Revati.

Add the Sun's and the Moon's places among the stars: 26° + 342.2° = 368.2°, one full turn and 8.2°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 0°00′–13°20′ is the 1st, Vishkambha. It ends at 13:38, then Priti.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Dwadashi is Kaulava and the second Taitila. Kaulava runs until 09:04, when the lead reaches 318°; Taitila until 19:25.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:48 to 05:47 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 14 Apr 00:30 Fri to 13 May 08:08 Sat the Sun stayed in Mesha, entering Vrishabha at 14 May 08:26 Sun, after the new moon. A month with no sankranti is Adhika Vaishakha, before Vaishakha 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 13 May, with the Sun in Mesha, begins Vaishakha (Adhik). Until then this Krishna paksha reads Vaishakha (Adhik) here, and Vaishakha (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 15 Mar 1972, 15:34 Wed. Since then the Sun has moved 54.5° round the stars. Vikram Samvat numbers that year 2029; Shaka Samvat numbers it 1894.