Panchang in Sevan, Gegharkunik, Armenia Mon 17 Aug 2020

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 11:05 on Mon 17 Aug to 09:10 on Tue 18 Aug, so only Monday night’s nishitha (00:43 Tue–01:24 Tue) falls within it. No text giving Masik Shivratri’s time was found; nishitha is Tithika’s convention.

Masik Shivratri: every date in Sevan

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, 06:12 here. Dwadashi ended at 12:21 Sun, before it. Trayodashi ends at 11:05, when the lead reaches 336°. The lead passed 180° at the full moon of 3 Aug, so the Moon is waning: Krishna paksha.

The night of Sun 16 Aug ran from sunset 19:55 Sun to sunrise 06:12, 10 h 17 m. Cut into 15 muhurtas of 41 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:12 to 19:54, splits into 8 choghadiyas of 1 h 42 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:54 to 06:13 Tue, splits into 8 choghadiyas of 1 h 17 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′. Pushya spans 93°20′–106°40′; the Moon entered its pada 1 at 93°20′. It leaves at 04:13 Tue, for Ashlesha.

Add the Sun's and the Moon's places among the stars: 120.5° + 93.9° = 214.4°. The sum, cut into 27 parts of 13°20′, gives the yoga: 213°20′–226°40′ is the 17th, Vyatipata. It ends at 02:01 Tue, then Variyana.

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 ended at 23:48 Sun, when the lead reached 330°; Vanija runs until 11:05.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:12 to 06:13 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: Karka gives Shravana. The Sun enters Simha on 16 Aug, inside the month. The next new moon, 19 Aug, finds it in Simha and begins Bhadrapada.

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 19 Aug, with the Sun in Simha, begins Bhadrapada. Until then this Krishna paksha reads Bhadrapada here, and Shravana in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 24 Mar 2020, 13:28 Tue. Since then the Sun has moved 140.4° round the stars. Vikram Samvat numbers that year 2077; Shaka Samvat numbers it 1942.