Panchang in Ipameri, Goiás, Brazil Mon 24 Dec 1917

Gita Jayanti follows the tithi at sunrise. Ekadashi runs from 10:28 on Sun 23 Dec to 09:01 on Mon 24 Dec, so it holds sunrise only on Mon 24 Dec, at 05:36. No text giving Gita Jayanti’s time was found; sunrise is Tithika’s convention.

Gita Jayanti: every date in Ipameri

Smartas test Ekadashi at sunrise: it holds sunrise on Mon 24 Dec only, at 05:36: Mon 24 Dec. Vaishnavas test arunodaya: Dashami ended at 10:28 Sun, before it (04:00–05:36).

Mokshada Ekadashi: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 120°–132° is the 11th, Shukla Ekadashi. A day takes the tithi in force at its sunrise, 05:36 here. Dashami ended at 10:28 Sun, before it. Ekadashi ends at 09:01, when the lead reaches 132°. The lead passed 0° at the new moon of 14 Dec, so the Moon is waxing: Shukla paksha.

The night of Sun 23 Dec ran from sunset 18:47 Sun to sunrise 05:36, 10 h 49 m. Cut into 15 muhurtas of 43 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:36 to 18:48, splits into 8 choghadiyas of 1 h 39 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:48 to 05:37 Tue, splits into 8 choghadiyas of 1 h 21 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′. Bharani spans 13°20′–26°40′; the Moon entered its pada 2 at 16°40′. It leaves at 18:14, for Krittika.

Add the Sun's and the Moon's places among the stars: 249.3° + 19.5° = 268.8°. The sum, cut into 27 parts of 13°20′, gives the yoga: 266°40′–280°00′ is the 21st, Siddha. It ends at 00:01 Tue, then Sadhya.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Ekadashi is Vanija and the second Vishti. Vanija ended at 21:42 Sun, when the lead reached 126°; Vishti runs until 09:01.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:36 to 05:37 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: Vrishchika gives Margashirsha. The Sun enters Dhanu on 15 Dec, inside the month. The next new moon, 12 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 14 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: 23 Mar 1917, 01:04 Fri. Since then the Sun has moved 270° round the stars. Vikram Samvat numbers that year 1974; Shaka Samvat numbers it 1839.