Panchang in Ipameri, Goiás, Brazil Fri 13 Apr 1917

The Sun enters Mesha at 02:15, after sunset (18:05 Thu), so the next day keeps it: Fri 13 Apr. No text giving Mesha Sankranti’s time was found; sankranti is Tithika’s convention.

Mesha Sankranti: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 240°–252° is the 21st, Krishna Shashthi. A day takes the tithi in force at its sunrise, 06:21 here. Panchami ended at 09:04 Thu, before it. Shashthi ends at 07:44, when the lead reaches 252°. The lead passed 180° at the full moon of 7 Apr, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Saptami began at 07:44 and ended at 06:06 Sat, between the sunrises of 06:21 and 06:21 Sat. Friday reads Shashthi and Saturday reads Ashtami: Saptami is a kshaya tithi here.

The night of Thu 12 Apr ran from sunset 18:05 Thu to sunrise 06:21, 12 h 16 m. Cut into 15 muhurtas of 49 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:21 to 18:05, 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, 18:05 to 06:21 Sat, splits into 8 choghadiyas of 1 h 32 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′. Mula spans 240°00′–253°20′; the Moon entered its pada 4 at 250°. It leaves at 09:40, for Purva Ashadha.

Add the Sun's and the Moon's places among the stars: 0.2° + 251.4° = 251.6°. The sum, cut into 27 parts of 13°20′, gives the yoga: 240°00′–253°20′ is the 19th, Parigha. It ends at 09:10, then Shiva.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Shashthi is Garaja and the second Vanija. Garaja ended at 20:26 Thu, when the lead reached 246°; Vanija runs until 07:44.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:21 to 06:21 Sat, so the hours after midnight still belong to Shukrawara.

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: Meena gives Chaitra. The Sun enters Mesha on 13 Apr, inside the month. The next new moon, 21 Apr, finds it in Mesha and begins Vaishakha.

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 21 Apr, with the Sun in Mesha, begins Vaishakha. Until then this Krishna paksha reads Vaishakha here, and Chaitra in the amanta count.

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 20.9° round the stars. Vikram Samvat numbers that year 1974; Shaka Samvat numbers it 1839.