Panchang in Sevan, Gegharkunik, Armenia Sat 26 Mar 1983

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 07:30 on Sat 26 Mar to 04:39 on Sun 27 Mar, so only Saturday’s pradosha (19:17–21:36) 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: 132°–144° is the 12th, Shukla Dwadashi. A day takes the tithi in force at its sunrise, 06:54 here. Ekadashi ended at 10:19 Fri, before it. Dwadashi ends at 07:30, when the lead reaches 144°. The lead passed 0° at the new moon of 14 Mar, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Trayodashi began at 07:30 and ended at 04:39 Sun, between the sunrises of 06:54 and 06:53 Sun. Saturday reads Dwadashi and Sunday reads Chaturdashi: Trayodashi is a kshaya tithi here.

The night of Fri 25 Mar ran from sunset 19:16 Fri to sunrise 06:54, 11 h 38 m. Cut into 15 muhurtas of 46 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:54 to 19:17, splits into 8 choghadiyas of 1 h 32 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:17 to 06:53 Sun, splits into 8 choghadiyas of 1 h 27 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′. Magha spans 120°00′–133°20′; the Moon entered its pada 2 at 123°20′. It leaves at 20:43, for Purva Phalguni.

Add the Sun's and the Moon's places among the stars: 341.3° + 124.9° = 466.2°, one full turn and 106.2°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 93°20′–106°40′ is the 8th, Dhriti. It ends at 07:37, then Shula.

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 ended at 20:55 Fri, when the lead reached 138°; Balava runs until 07:30.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:54 to 06:53 Sun, so the hours after midnight still belong to Shaniwara.

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, 13 Apr, 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 14 Mar, 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 1982, 14:17 Thu. Since then the Sun has moved 360.5° round the stars. Vikram Samvat numbers that year 2039; Shaka Samvat numbers it 1904.