Panchang in Ipameri, Goiás, Brazil Fri 18 Nov 1949

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 11:22 on Fri 18 Nov to 07:55 on Sat 19 Nov, so only Friday night’s nishitha (23:36–00:20 Sat) falls within it. No text giving Masik Shivratri’s time was found; nishitha is Tithika’s convention.

Masik Shivratri: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 324°–336° is the 28th, Krishna Trayodashi. A day takes the tithi in force at its sunrise, 05:28 here. Dwadashi ended at 14:42 Thu, before it. Trayodashi ends at 11:22, when the lead reaches 336°. The lead passed 180° at the full moon of 5 Nov, so the Moon is waning: Krishna paksha.

The night of Thu 17 Nov ran from sunset 18:26 Thu to sunrise 05:28, 11 h 2 m. Cut into 15 muhurtas of 44 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:28 to 18:27, splits into 8 choghadiyas of 1 h 37 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:27 to 05:28 Sat, splits into 8 choghadiyas of 1 h 22 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′. Chitra spans 173°20′–186°40′; the Moon entered its pada 4 at 183°20′. It leaves at 08:01, for Swati.

Add the Sun's and the Moon's places among the stars: 212.5° + 185.1° = 397.6°, one full turn and 37.6°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 26°40′–40°00′ is the 3rd, Ayushmana. It ends at 09:05, then Saubhagya.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Trayodashi is Garaja and the second Vanija. Garaja ended at 01:04, when the lead reached 330°; Vanija runs until 11:22.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:28 to 05:28 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: Tula gives Kartika. The Sun enters Vrishchika on 15 Nov, inside the month. The next new moon, 20 Nov, finds it in Vrishchika and begins Margashirsha.

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 20 Nov, with the Sun in Vrishchika, begins Margashirsha. Until then this Krishna paksha reads Margashirsha here, and Kartika in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 29 Mar 1949, 12:10 Tue. Since then the Sun has moved 227° round the stars. Vikram Samvat numbers that year 2006; Shaka Samvat numbers it 1871.