Panchang in Ipameri, Goiás, Brazil Mon 9 May 2016

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 36°–48° is the 4th, Shukla Chaturthi. A day takes the tithi in force at its sunrise, 06:28 here. Tritiya ended at 06:22, before it. Chaturthi ends at 04:00 Tue, when the lead reaches 48°. The lead passed 0° at the new moon of 6 May, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 05:34, came before Tritiya ended at 14:52: this day reads Tritiya.

Ipameri · UTC−3

Sunrise here, 06:28, came after Tritiya ended at 06:22: this day reads Chaturthi.

The night of Sun 8 May ran from sunset 17:50 Sun to sunrise 06:28, 12 h 38 m. Cut into 15 muhurtas of 50 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:28 to 17:49, splits into 8 choghadiyas of 1 h 25 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:49 to 06:29 Tue, splits into 8 choghadiyas of 1 h 35 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′. Mrigashira spans 53°20′–66°40′; the Moon entered its pada 3 at 60°. It leaves at 15:39, for Ardra.

Add the Sun's and the Moon's places among the stars: 25.1° + 61.2° = 86.3°. The sum, cut into 27 parts of 13°20′, gives the yoga: 80°00′–93°20′ is the 7th, Sukarma. It ends at 17:31, then Dhriti.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Chaturthi is Vanija and the second Vishti. Vanija runs until 17:06, when the lead reaches 42°; Vishti until 04:00 Tue.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:28 to 06:29 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: Mesha gives Vaishakha. The Sun enters Vrishabha on 14 May, inside the month. The next new moon, 4 Jun, finds it in Vrishabha and begins Jyeshtha.

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 6 May, with the Sun in Mesha, began Vaishakha. This Shukla paksha reads Vaishakha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 7 Apr 2016, 08:23 Thu. Since then the Sun has moved 31.1° round the stars. Vikram Samvat numbers that year 2073; Shaka Samvat numbers it 1938.