Panchang in Davinópolis, Maranhão, Brazil Sat 18 Dec 1999

Gita Jayanti follows the tithi at sunrise. Ekadashi begins at 08:03 on Sat 18 Dec, after that sunrise, and ends at 05:37 on Sun 19 Dec, before the next: it holds no sunrise. A tithi that holds no sunrise is kept on the day it is current: Sat 18 Dec. No text giving Gita Jayanti’s time was found; sunrise is Tithika’s convention.

Gita Jayanti: every date in Davinópolis

Smartas test Ekadashi at sunrise. It begins at 08:03 on Sat 18 Dec, after that sunrise (06:52), and ends at 05:37 on Sun 19 Dec, before the next (06:53 Sun): it holds no sunrise. A kshaya Ekadashi is kept on the day it is current: Sat 18 Dec.

Mokshada Ekadashi: every date in Davinópolis

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 108°–120° is the 10th, Shukla Dashami. A day takes the tithi in force at its sunrise, 06:52 here. Navami ended at 09:46 Fri, before it. Dashami ends at 08:03, when the lead reaches 120°. The lead passed 0° at the new moon of 7 Dec, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Ekadashi began at 08:03 and ended at 05:37 Sun, between the sunrises of 06:52 and 06:53 Sun. Saturday reads Dashami and Sunday reads Dwadashi: Ekadashi is a kshaya tithi here.

The night of Fri 17 Dec ran from sunset 19:18 Fri to sunrise 06:52, 11 h 34 m. Cut into 15 muhurtas of 46 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:52 to 19:19, 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, 19:19 to 06:53 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′. Ashwini spans 0°00′–13°20′; the Moon entered its pada 1 at 0°. It leaves at 02:43 Sun, for Bharani.

Add the Sun's and the Moon's places among the stars: 242.1° + 1.5° = 243.6°. The sum, cut into 27 parts of 13°20′, gives the yoga: 240°00′–253°20′ is the 19th, Parigha. It ends at 22:07, then Shiva.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Dashami is Taitila and the second Garaja. Taitila ended at 21:00 Fri, when the lead reached 114°; Garaja runs until 08:03.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:52 to 06:53 Sun, so the hours after midnight still belong to Shaniwara.

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: Vrishchika gives Margashirsha. The Sun enters Dhanu on 16 Dec, inside the month. The next new moon, 6 Jan, finds it in Dhanu and begins Pausha.

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 7 Dec, with the Sun in Vrishchika, began Margashirsha. This Shukla paksha reads Margashirsha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 17 Mar 1999, 15:47 Wed. Since then the Sun has moved 269.2° round the stars. Vikram Samvat numbers that year 2056; Shaka Samvat numbers it 1921.