Panchang in Ipameri, Goiás, Brazil Sat 16 Oct 1982

Amavasya follows the tithi at sunrise. Amavasya runs from 21:41 on Fri 15 Oct to 21:04 on Sat 16 Oct, so it holds sunrise only on Sat 16 Oct, at 05:43. No text giving Amavasya’s time was found; sunrise is Tithika’s convention.

Amavasya: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 348°–360° is the 30th, Krishna Amavasya. A day takes the tithi in force at its sunrise, 05:43 here. Chaturdashi ended at 21:41 Fri, before it. Amavasya ends at 21:04, when the lead reaches 360°. The lead passed 180° at the full moon of 2 Oct, so the Moon is waning: Krishna paksha.

The night of Fri 15 Oct ran from sunset 18:13 Fri to sunrise 05:43, 11 h 30 m. Cut into 15 muhurtas of 46 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:43 to 18:13, splits into 8 choghadiyas of 1 h 33 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:13 to 05:42 Sun, splits into 8 choghadiyas of 1 h 26 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′. Hasta spans 160°00′–173°20′; the Moon entered its pada 4 at 170°. It leaves at 09:34, for Chitra.

Add the Sun's and the Moon's places among the stars: 179° + 171.2° = 350.2°. The sum, cut into 27 parts of 13°20′, gives the yoga: 346°40′–360°00′ is the 27th, Vaidhriti. It ends at 22:08, then Vishkambha.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Amavasya is Chatushpada and the second Nagava. Chatushpada runs until 09:19, when the lead reaches 354°; Nagava until 21:04.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:43 to 05:42 Sun, so the hours after midnight still belong to Shaniwara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 17 Sep 09:09 Fri to 16 Oct 21:04 the Sun stayed in Kanya, entering Tula at 17 Oct 04:46 Sun, 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 16 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 1982, 07:17 Thu. Since then the Sun has moved 198.2° round the stars. Vikram Samvat numbers that year 2039; Shaka Samvat numbers it 1904.