Panchang in Vapi, Gujarat Tue 16 Jan 2018

Mauni Amavasya follows the tithi at sunrise. Amavasya holds both sunrises, 07:16 on Tue 16 Jan and 07:16 on Wed 17 Jan. Over two sunrises the Nirnayasindhu takes the first: Tue 16 Jan. No text giving Mauni Amavasya’s time was found; sunrise is Tithika’s convention.

Mauni Amavasya: every date in Vapi

Amavasya follows the tithi at sunrise. Amavasya holds both sunrises, 07:16 on Tue 16 Jan and 07:16 on Wed 17 Jan. Over two sunrises the Nirnayasindhu takes the first: Tue 16 Jan. No text giving Amavasya’s time was found; sunrise is Tithika’s convention.

Amavasya: every date in Vapi

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 348°–360° is the 30th, Krishna Amavasya. A day takes the tithi in force at its sunrise, 07:16 here. Chaturdashi ended at 05:11, before it. Amavasya ends at 07:47 Wed, when the lead reaches 360°. The lead passed 180° at the full moon of 2 Jan, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Amavasya began at 05:11, before sunrise at 07:16, and ends at 07:47 Wed, after the next sunrise at 07:16 Wed. Both days read Amavasya: it is a vriddhi tithi here.

The night of Mon 15 Jan ran from sunset 18:18 Mon to sunrise 07:16, 12 h 58 m. Cut into 15 muhurtas of 51 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:16 to 18:19, 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 night here, 18:19 to 07:16 Wed, 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 fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Purva Ashadha spans 253°20′–266°40′; the Moon entered its pada 3 at 260°. It leaves at 19:22, for Uttara Ashadha.

Add the Sun's and the Moon's places among the stars: 271.8° + 260.7° = 532.5°, one full turn and 172.5°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 160°00′–173°20′ is the 13th, Vyaghata. It ends at 08:54, then Harshana.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Amavasya is Chatushpada and the second Nagava. Chatushpada runs until 18:30, when the lead reaches 354°; Nagava until 07:47 Wed.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:16 to 07:16 Wed, so the hours after midnight still belong to Mangalawara.

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: Dhanu gives Pausha. The Sun enters Makara on 14 Jan, inside the month. The next new moon, 17 Jan, finds it in Makara and begins Magha.

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 17 Jan, with the Sun in Makara, begins Magha. Until then this Krishna paksha reads Magha here, and Pausha in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 28 Mar 2017, 08:27 Tue. Since then the Sun has moved 288.3° round the stars. Vikram Samvat numbers that year 2074; Shaka Samvat numbers it 1939.