Panchang in Sevan, Gegharkunik, Armenia Mon 15 Oct 2001

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 06:52 on Mon 15 Oct to 03:32 on Tue 16 Oct, so only Monday night’s nishitha (01:20 Tue–02:11 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: 336°–348° is the 29th, Krishna Chaturdashi. A day takes the tithi in force at its sunrise, 08:10 here. Trayodashi ended at 06:52, before it. Chaturdashi ends at 03:32 Tue, when the lead reaches 348°. The lead passed 180° at the full moon of 2 Oct, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 06:21, came before Trayodashi ended at 07:22: this day reads Trayodashi. Chaturdashi ends at 04:02 Tue, before the next sunrise, so no day here reads Chaturdashi: it is kshaya.

Sevan · UTC+5

Sunrise here, 08:10, came after Trayodashi ended at 06:52: this day reads Chaturdashi.

The night of Sun 14 Oct ran from sunset 19:21 Sun to sunrise 08:10, 12 h 49 m. Cut into 15 muhurtas of 51 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 08:10 to 19:20, splits into 8 choghadiyas of 1 h 23 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:20 to 08:11 Tue, splits into 8 choghadiyas of 1 h 36 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′. Uttara Phalguni spans 146°40′–160°00′; the Moon entered its pada 3 at 153°20′. It leaves at 16:40, for Hasta.

Add the Sun's and the Moon's places among the stars: 178° + 154.7° = 332.7°. The sum, cut into 27 parts of 13°20′, gives the yoga: 320°00′–333°20′ is the 25th, Brahma. It ends at 09:10, then Indra.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Chaturdashi is Vishti and the second Shakuni. Vishti runs until 17:11, when the lead reaches 342°; Shakuni until 03:32 Tue.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 08:10 to 08:11 Tue, so the hours after midnight still belong to Somawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 17 Sep 15:27 Mon to 17 Oct 00:23 Wed the Sun stayed in Kanya, entering Tula at 17 Oct 09:37 Wed, after the new moon. A month with no sankranti is Adhika Ashwina, before Ashwina 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 17 Oct, with the Sun in Kanya, begins Ashwina (Adhik). Until then this Krishna paksha reads Ashwina (Adhik) here, and Ashwina (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 25 Mar 2001, 06:21 Sun. Since then the Sun has moved 197.4° round the stars. Vikram Samvat numbers that year 2058; Shaka Samvat numbers it 1923.