Panchang in Sevan, Gegharkunik, Armenia Tue 23 Oct 1917

Durga Ashtami follows the tithi at sunrise. Ashtami begins at 06:20 on Tue 23 Oct, after that sunrise, and ends at 04:42 on Wed 24 Oct, before the next: it holds no sunrise. A tithi that holds no sunrise is kept on the day it is current: Tue 23 Oct. No text giving Durga Ashtami’s time was found; sunrise is Tithika’s convention.

Durga Ashtami: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 72°–84° is the 7th, Shukla Saptami. A day takes the tithi in force at its sunrise, 06:18 here. Shashthi ended at 07:32 Mon, before it. Saptami ends at 06:22, when the lead reaches 84°. The lead passed 0° at the new moon of 16 Oct, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Ashtami began at 06:22 and ended at 04:44 Wed, between the sunrises of 06:18 and 06:19 Wed. Tuesday reads Saptami and Wednesday reads Navami: Ashtami is a kshaya tithi here.

The night of Mon 22 Oct ran from sunset 17:10 Mon to sunrise 06:18, 13 h 8 m. Cut into 15 muhurtas of 52 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:18 to 17:09, splits into 8 choghadiyas of 1 h 21 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:09 to 06:19 Wed, splits into 8 choghadiyas of 1 h 38 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 Ashadha spans 266°40′–280°00′; the Moon entered its pada 2 at 270°. It leaves at 22:57, for Shravana.

Add the Sun's and the Moon's places among the stars: 186.4° + 270.4° = 456.8°, one full turn and 96.8°. 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 22:12, then Shula.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Saptami is Garaja and the second Vanija. Garaja ended at 19:00 Mon, when the lead reached 78°; Vanija runs until 06:22.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:18 to 06:19 Wed, so the hours after midnight still belong to Mangalawara.

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: Kanya gives Ashwina. The Sun enters Tula on 16 Oct, inside the month. The next new moon, 14 Nov, finds it in Tula and begins Kartika.

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 Oct, with the Sun in Kanya, began Ashwina. This Shukla paksha reads Ashwina in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 23 Mar 1917, 07:04 Fri. Since then the Sun has moved 207.1° round the stars. Vikram Samvat numbers that year 1974; Shaka Samvat numbers it 1839.