Panchang in Sevan, Gegharkunik, Armenia Thu 26 Apr 1934

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 19:01 on Thu 26 Apr to 18:35 on Fri 27 Apr, so it touches only Thursday’s pradosha (18:49–20:52). 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: 132°–144° is the 12th, Shukla Dwadashi. A day takes the tithi in force at its sunrise, 05:06 here. Ekadashi ended at 18:42 Wed, before it. Dwadashi ends at 19:01, when the lead reaches 144°. The lead passed 0° at the new moon of 14 Apr, so the Moon is waxing: Shukla paksha.

The night of Wed 25 Apr ran from sunset 18:48 Wed to sunrise 05:06, 10 h 18 m. Cut into 15 muhurtas of 41 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:06 to 18:49, splits into 8 choghadiyas of 1 h 42 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:49 to 05:05 Fri, splits into 8 choghadiyas of 1 h 17 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 Phalguni spans 146°40′–160°00′; the Moon entered its pada 1 at 146°40′. It leaves at 00:56 Fri, for Hasta.

Add the Sun's and the Moon's places among the stars: 12.2° + 149.3° = 161.5°. The sum, cut into 27 parts of 13°20′, gives the yoga: 160°00′–173°20′ is the 13th, Vyaghata. It ends at 01:28 Fri, then Harshana.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Dwadashi is Bava and the second Balava. Bava runs until 06:57, when the lead reaches 138°; Balava until 19:01.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:06 to 05:05 Fri, so the hours after midnight still belong to Guruwara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 14 Apr 02:56 Sat to 13 May 15:30 Sun the Sun stayed in Mesha, entering Vrishabha at 14 May 13:45 Mon, 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 14 Apr, with the Sun in Mesha, began Vaishakha (Adhik). This Shukla paksha reads Vaishakha (Adhik) in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 15 Mar 1934, 15:08 Thu. Since then the Sun has moved 40.9° round the stars. Vikram Samvat numbers that year 1991; Shaka Samvat numbers it 1856.