Panchang in Sevan, Gegharkunik, Armenia Wed 10 Oct 1990

Ahoi Ashtami’s puja is done in pradosha, the 3 muhurtas after sunset. Ashtami runs from 20:23 on Wed 10 Oct to 18:46 on Thu 11 Oct, touching pradosha on both evenings. The Nirnayasindhu takes the evening it holds more of: Wed 10 Oct. No text giving Ahoi Ashtami’s time was found; pradosha is Tithika’s convention.

Ahoi Ashtami: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 252°–264° is the 22nd, Krishna Saptami. A day takes the tithi in force at its sunrise, 07:05 here. Shashthi ended at 22:27 Tue, before it. Saptami ends at 20:23, when the lead reaches 264°. The lead passed 180° at the full moon of 4 Oct, so the Moon is waning: Krishna paksha.

The night of Tue 9 Oct ran from sunset 18:30 Tue to sunrise 07:05, 12 h 35 m. Cut into 15 muhurtas of 50 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:05 to 18:28, splits into 8 choghadiyas of 1 h 25 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:28 to 07:06 Thu, splits into 8 choghadiyas of 1 h 34 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′. Ardra spans 66°40′–80°00′; the Moon entered its pada 1 at 66°40′. It leaves at 00:54 Thu, for Punarvasu.

Add the Sun's and the Moon's places among the stars: 172.8° + 69.6° = 242.4°. The sum, cut into 27 parts of 13°20′, gives the yoga: 240°00′–253°20′ is the 19th, Parigha. It ends at 00:32 Thu, then Shiva.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Saptami is Vishti and the second Bava. Vishti runs until 09:22, when the lead reaches 258°; Bava until 20:23.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:05 to 07:06 Thu, so the hours after midnight still belong to Budhawara.

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 17 Oct, inside the month. The next new moon, 18 Oct, 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 18 Oct, with the Sun in Tula, begins Kartika. Until then this Krishna paksha reads Kartika here, and Ashwina in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 27 Mar 1990, 00:48 Tue. Since then the Sun has moved 190.6° round the stars. Vikram Samvat numbers that year 2047; Shaka Samvat numbers it 1912.