Panchang in Davinópolis, Maranhão, Brazil Thu 19 Oct 2000

Ahoi Ashtami’s puja is done in pradosha, the 3 muhurtas after sunset. Ashtami runs from 18:59 on Thu 19 Oct to 16:58 on Fri 20 Oct, so only Thursday’s pradosha (19:01–21:22) falls within it. No text giving Ahoi Ashtami’s time was found; pradosha is Tithika’s convention.

Ahoi Ashtami: every date in Davinópolis

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, 06:47 here. Shashthi ended at 21:00 Wed, before it. Saptami ends at 18:59, when the lead reaches 264°. The lead passed 180° at the full moon of 13 Oct, so the Moon is waning: Krishna paksha.

The night of Wed 18 Oct ran from sunset 19:01 Wed to sunrise 06:47, 11 h 46 m. Cut into 15 muhurtas of 47 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:47 to 19:01, 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 night here, 19:01 to 06:46 Fri, 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 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 4 at 76°40′. It leaves at 07:13, for Punarvasu.

Add the Sun's and the Moon's places among the stars: 182.4° + 79.7° = 262.1°. The sum, cut into 27 parts of 13°20′, gives the yoga: 253°20′–266°40′ is the 20th, Shiva. It ends at 13:58, then Siddha.

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 08:00, when the lead reaches 258°; Bava until 18:59.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:47 to 06:46 Fri, so the hours after midnight still belong to Guruwara.

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, 27 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 27 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: 4 Apr 2000, 15:12 Tue. Since then the Sun has moved 191° round the stars. Vikram Samvat numbers that year 2057; Shaka Samvat numbers it 1922.