Amavasya (अमावस्या) dates and timings in Perth for 1917
Verified astronomical start and end times for lunar day 30 in Perth, shown in Australia/Perth.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 22 Jan 1917, 8:21 pm GMT+9 | 23 Jan 1917, 4:39 pm GMT+9 | 20 hr 18 min | Yes |
| 2 | 21 Feb 1917, 6:50 am GMT+9 | 22 Feb 1917, 3:08 am GMT+9 | 20 hr 18 min | Yes |
| 3 | 22 Mar 1917, 4:16 pm GMT+9 | 23 Mar 1917, 1:04 pm GMT+9 | 20 hr 48 min | Yes |
| 4 | 21 Apr 1917, 12:11 am GMT+8 | 21 Apr 1917, 10:01 pm GMT+8 | 21 hr 49 min | No |
| 5 | 20 May 1917, 9:34 am GMT+8 | 21 May 1917, 8:46 am GMT+8 | 23 hr 12 min | Yes |
| 6 | 18 Jun 1917, 8:21 pm GMT+8 | 19 Jun 1917, 9:01 pm GMT+8 | 24 hr 40 min | Yes |
| 7 | 18 Jul 1917, 9:07 am GMT+8 | 19 Jul 1917, 10:59 am GMT+8 | 25 hr 52 min | Yes |
| 8 | 16 Aug 1917, 11:52 pm GMT+8 | 18 Aug 1917, 2:20 am GMT+8 | 26 hr 28 min | Yes |
| 9 | 15 Sept 1917, 4:05 pm GMT+8 | 16 Sept 1917, 6:27 pm GMT+8 | 26 hr 22 min | Yes |
| 10 | 15 Oct 1917, 9:02 am GMT+8 | 16 Oct 1917, 10:40 am GMT+8 | 25 hr 38 min | Yes |
| 11 | 14 Nov 1917, 1:59 am GMT+8 | 15 Nov 1917, 2:28 am GMT+8 | 24 hr 28 min | Yes |
| 12 | 13 Dec 1917, 6:12 pm GMT+8 | 14 Dec 1917, 5:17 pm GMT+8 | 23 hr 5 min | Yes |
How these timings are calculated
BDA calculates the geocentric angular separation of the Moon and Sun and divides the full cycle into 30 equal 12-degree Tithi sectors. UTC boundaries are converted to the timezone resolved from the listed city coordinates.
Scope: These are astronomical Tithi spans only. This page does not choose a festival, Vrat, Parana, or Muhurta date. Those decisions require their separately certified sunrise-prevalence and observance rules.
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