Panchang in Sevan, Gegharkunik, Armenia Sat 29 May 2083

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 01:05 on Sat 29 May to 21:29 on Sat 29 May, so it touches only Saturday’s pradosha (20:22–22:12). 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, 05:33 here. Dwadashi ended at 01:05, before it. Trayodashi ends at 21:29, when the lead reaches 156°. The lead passed 0° at the new moon of 16 May, so the Moon is waxing: Shukla paksha.

The night of Fri 28 May ran from sunset 20:21 Fri to sunrise 05:33, 9 h 12 m. Cut into 15 muhurtas of 36 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:33 to 20:22, splits into 8 choghadiyas of 1 h 51 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 20:22 to 05:32 Sun, splits into 8 choghadiyas of 1 h 8 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′. Swati spans 186°40′–200°00′; the Moon entered its pada 1 at 186°40′. It leaves at 22:11, for Vishakha.

Add the Sun's and the Moon's places among the stars: 42.9° + 189.5° = 232.4°. The sum, cut into 27 parts of 13°20′, gives the yoga: 226°40′–240°00′ is the 18th, Variyana. It ends at 16:51, then Parigha.

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 11:20, when the lead reaches 150°; Taitila until 21:29.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:33 to 05:32 Sun, so the hours after midnight still belong to Shaniwara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 16 May 22:15 Sun to 15 Jun 13:39 Tue the Sun stayed in Vrishabha, entering Mithuna at 16 Jun 01:47 Wed, after the new moon. A month with no sankranti is Adhika Jyeshtha, before Jyeshtha 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 16 May, with the Sun in Vrishabha, began Jyeshtha (Adhik). This Shukla paksha reads Jyeshtha (Adhik) in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 18 Mar 2083, 13:58 Thu. Since then the Sun has moved 69.9° round the stars. Vikram Samvat numbers that year 2140; Shaka Samvat numbers it 2005.