Panchang in Sevan, Gegharkunik, Armenia Mon 24 Feb 1964

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 20:38 on Mon 24 Feb to 19:01 on Tue 25 Feb, touching pradosha on both evenings. The Nirnayasindhu takes the evening it holds more of: Mon 24 Feb. 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, 07:43 here. Ekadashi ended at 22:26 Sun, before it. Dwadashi ends at 20:38, when the lead reaches 144°. The lead passed 0° at the new moon of 13 Feb, so the Moon is waxing: Shukla paksha.

The night of Sun 23 Feb ran from sunset 18:43 Sun to sunrise 07:43, 13 h 0 m. Cut into 15 muhurtas of 52 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:43 to 18:44, splits into 8 choghadiyas of 1 h 22 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:44 to 07:41 Tue, splits into 8 choghadiyas of 1 h 37 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′. Punarvasu spans 80°00′–93°20′; the Moon entered its pada 3 at 86°40′. It leaves at 16:28, for Pushya.

Add the Sun's and the Moon's places among the stars: 311.2° + 88.2° = 399.4°, one full turn and 39.4°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 26°40′–40°00′ is the 3rd, Ayushmana. It ends at 08:35, then Saubhagya.

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 09:31, when the lead reaches 138°; Balava until 20:38.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:43 to 07:41 Tue, so the hours after midnight still belong to Somawara.

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: Kumbha gives Phalguna. The Sun enters Meena on 14 Mar, inside the month. The next new moon, 14 Mar, finds it in Meena and begins Chaitra.

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 Feb, with the Sun in Kumbha, began Phalguna. This Shukla paksha reads Phalguna in both counts.

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 330.4° round the stars. Vikram Samvat numbers that year 2020; Shaka Samvat numbers it 1885.