Panchang in Sevan, Gegharkunik, Armenia Wed 5 Jul 1933

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 01:54 on Wed 5 Jul to 22:17 on Wed 5 Jul, so only Wednesday’s pradosha (19:33–21:21) 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: 144°–156° is the 13th, Shukla Trayodashi. A day takes the tithi in force at its sunrise, 04:34 here. Dwadashi ended at 01:54, before it. Trayodashi ends at 22:17, when the lead reaches 156°. The lead passed 0° at the new moon of 23 Jun, so the Moon is waxing: Shukla paksha.

The night of Tue 4 Jul ran from sunset 19:33 Tue to sunrise 04:34, 9 h 1 m. Cut into 15 muhurtas of 36 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 04:34 to 19:33, splits into 8 choghadiyas of 1 h 52 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:33 to 04:35 Thu, splits into 8 choghadiyas of 1 h 7 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′. Anuradha spans 213°20′–226°40′; the Moon entered its pada 4 at 223°20′. It leaves at 06:54, for Jyeshtha.

Add the Sun's and the Moon's places among the stars: 79.6° + 225.2° = 304.8°. The sum, cut into 27 parts of 13°20′, gives the yoga: 293°20′–306°40′ is the 23rd, Shubha. It ends at 07:18, then Shukla.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Trayodashi is Kaulava and the second Taitila. Kaulava runs until 12:07, when the lead reaches 150°; Taitila until 22:17.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 04:34 to 04:35 Thu, so the hours after midnight still belong to Budhawara.

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: Mithuna gives Ashadha. The Sun enters Karka on 16 Jul, inside the month. The next new moon, 22 Jul, finds it in Karka and begins Shravana.

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 23 Jun, with the Sun in Mithuna, began Ashadha. This Shukla paksha reads Ashadha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 26 Mar 1933, 06:20 Sun. Since then the Sun has moved 97.5° round the stars. Vikram Samvat numbers that year 1990; Shaka Samvat numbers it 1855.