Panchang in Codcod, Western Visayas, Philippines Mon 21 Oct 2019

Ahoi Ashtami’s puja is done in pradosha, the 3 muhurtas after sunset. Ashtami runs from 09:14 on Mon 21 Oct to 07:55 on Tue 22 Oct, so only Monday’s pradosha (17:27–19:53) falls within it. No text giving Ahoi Ashtami’s time was found; pradosha is Tithika’s convention.

Ahoi Ashtami: every date in Codcod

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, 05:36 here. Shashthi ended at 10:00 Sun, before it. Saptami ends at 09:14, when the lead reaches 264°. The lead passed 180° at the full moon of 14 Oct, so the Moon is waning: Krishna paksha.

The night of Sun 20 Oct ran from sunset 17:27 Sun to sunrise 05:36, 12 h 9 m. Cut into 15 muhurtas of 48 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:36 to 17:27, splits into 8 choghadiyas of 1 h 28 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:27 to 05:36 Tue, splits into 8 choghadiyas of 1 h 31 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 20:02, for Pushya.

Add the Sun's and the Moon's places among the stars: 183.1° + 85.2° = 268.3°. The sum, cut into 27 parts of 13°20′, gives the yoga: 266°40′–280°00′ is the 21st, Siddha. It ends at 00:56 Tue, then Sadhya.

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 ended at 21:41 Sun, when the lead reached 258°; Bava runs until 09:14.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:36 to 05:36 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: Kanya gives Ashwina. The Sun enters Tula on 18 Oct, inside the month. The next new moon, 28 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 28 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: 5 Apr 2019, 16:50 Fri. Since then the Sun has moved 191.9° round the stars. Vikram Samvat numbers that year 2076; Shaka Samvat numbers it 1941.