Panchang in Myjava, Trenčín Region, Slovakia Fri 12 Aug 1977

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 19:48 on Thu 11 Aug to 21:12 on Fri 12 Aug, touching pradosha on both evenings. The Nirnayasindhu takes the evening it holds more of: Fri 12 Aug. No text giving Pradosh Vrat’s time was found; pradosha is Tithika’s convention.

Pradosh Vrat: every date in Myjava

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 21:12 on Fri 12 Aug to 22:06 on Sat 13 Aug, so only Friday night’s nishitha (23:35–00:13 Sat) falls within it. No text giving Masik Shivratri’s time was found; nishitha is Tithika’s convention.

Masik Shivratri: every date in Myjava

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 324°–336° is the 28th, Krishna Trayodashi. A day takes the tithi in force at its sunrise, 04:37 here. Dwadashi ended at 19:48 Thu, before it. Trayodashi ends at 21:12, when the lead reaches 336°. The lead passed 180° at the full moon of 30 Jul, so the Moon is waning: Krishna paksha.

The night of Thu 11 Aug ran from sunset 19:12 Thu to sunrise 04:37, 9 h 25 m. Cut into 15 muhurtas of 37 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 04:37 to 19:10, splits into 8 choghadiyas of 1 h 49 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:10 to 04:39 Sat, splits into 8 choghadiyas of 1 h 11 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 2 at 83°20′. It leaves at 22:55, for Pushya.

Add the Sun's and the Moon's places among the stars: 115.8° + 83.9° = 199.7°. The sum, cut into 27 parts of 13°20′, gives the yoga: 186°40′–200°00′ is the 15th, Vajra. It ends at 05:10, then Siddhi.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Trayodashi is Garaja and the second Vanija. Garaja runs until 08:33, when the lead reaches 330°; Vanija until 21:12.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 04:37 to 04:39 Sat, so the hours after midnight still belong to Shukrawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 16 Jul 09:36 Sat to 14 Aug 22:31 Sun the Sun stayed in Karka, entering Simha at 16 Aug 14:07 Tue, after the new moon. A month with no sankranti is Adhika Shravana, before Shravana 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 Aug, with the Sun in Karka, begins Shravana (Adhik). Until then this Krishna paksha reads Shravana (Adhik) here, and Shravana (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 19 Mar 1977, 19:32 Sat. Since then the Sun has moved 140.3° round the stars. Vikram Samvat numbers that year 2034; Shaka Samvat numbers it 1899.