Panchang in Vapi, Gujarat Thu 22 Dec 2016

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 276°–288° is the 24th, Krishna Navami. A day takes the tithi in force at its sunrise, 07:10 here. Ashtami ended at 20:17 Wed, before it. Navami ends at 22:25, when the lead reaches 288°. The lead passed 180° at the full moon of 14 Dec, so the Moon is waning: Krishna paksha.

The night of Wed 21 Dec ran from sunset 18:03 Wed to sunrise 07:10, 13 h 7 m. Cut into 15 muhurtas of 52 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:10 to 18:04, 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 night here, 18:04 to 07:10 Fri, splits into 8 choghadiyas of 1 h 38 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′. Hasta spans 160°00′–173°20′; the Moon entered its pada 3 at 166°40′. It leaves at 18:41, for Chitra.

Add the Sun's and the Moon's places among the stars: 246.5° + 167.6° = 414.1°, one full turn and 54.1°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 53°20′–66°40′ is the 5th, Shobhana. It ends at 06:22 Fri, then Atiganda.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Navami is Taitila and the second Garaja. Taitila runs until 09:17, when the lead reaches 282°; Garaja until 22:25.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:10 to 07:10 Fri, so the hours after midnight still belong to Guruwara.

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, 29 Dec, 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 29 Dec, with the Sun in Dhanu, begins Pausha. Until then this Krishna paksha reads Pausha here, and Margashirsha in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 7 Apr 2016, 16:53 Thu. Since then the Sun has moved 252.5° round the stars. Vikram Samvat numbers that year 2073; Shaka Samvat numbers it 1938.