Amavasya (अमावस्या) dates and timings in Perth for 1921
Verified astronomical start and end times for lunar day 30 in Perth, shown in Australia/Perth.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 8 Jan 1921, 10:53 am GMT+8 | 9 Jan 1921, 1:26 pm GMT+8 | 26 hr 33 min | Yes |
| 2 | 7 Feb 1921, 6:18 am GMT+8 | 8 Feb 1921, 8:36 am GMT+8 | 26 hr 18 min | Yes |
| 3 | 9 Mar 1921, 12:42 am GMT+8 | 10 Mar 1921, 2:08 am GMT+8 | 25 hr 26 min | Yes |
| 4 | 7 Apr 1921, 4:56 pm GMT+8 | 8 Apr 1921, 5:04 pm GMT+8 | 24 hr 8 min | Yes |
| 5 | 7 May 1921, 6:19 am GMT+8 | 8 May 1921, 5:01 am GMT+8 | 22 hr 41 min | Yes |
| 6 | 5 Jun 1921, 4:52 pm GMT+8 | 6 Jun 1921, 2:14 pm GMT+8 | 21 hr 22 min | Yes |
| 7 | 5 Jul 1921, 1:08 am GMT+8 | 5 Jul 1921, 9:35 pm GMT+8 | 20 hr 27 min | No |
| 8 | 3 Aug 1921, 8:12 am GMT+8 | 4 Aug 1921, 4:17 am GMT+8 | 20 hr 5 min | Yes |
| 9 | 1 Sept 1921, 3:14 pm GMT+8 | 2 Sept 1921, 11:32 am GMT+8 | 20 hr 18 min | Yes |
| 10 | 30 Sept 1921, 11:23 pm GMT+8 | 1 Oct 1921, 8:26 pm GMT+8 | 21 hr 3 min | Yes |
| 11 | 30 Oct 1921, 9:27 am GMT+8 | 31 Oct 1921, 7:38 am GMT+8 | 22 hr 11 min | Yes |
| 12 | 28 Nov 1921, 9:52 pm GMT+8 | 29 Nov 1921, 9:25 pm GMT+8 | 23 hr 32 min | Yes |
| 13 | 28 Dec 1921, 12:44 pm GMT+8 | 29 Dec 1921, 1:39 pm GMT+8 | 24 hr 55 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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