Dwadashi (द्वादशी) dates and timings in Perth for 1931
Verified astronomical start and end times for lunar day 12 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 | 1 Jan 1931, 4:06 am GMT+8 | 2 Jan 1931, 3:27 am GMT+8 | 23 hr 21 min | Yes |
| 2 | 30 Jan 1931, 7:50 pm GMT+8 | 31 Jan 1931, 5:51 pm GMT+8 | 22 hr 0 min | Yes |
| 3 | 1 Mar 1931, 8:21 am GMT+8 | 2 Mar 1931, 5:29 am GMT+8 | 21 hr 8 min | Yes |
| 4 | 30 Mar 1931, 5:56 pm GMT+8 | 31 Mar 1931, 2:45 pm GMT+8 | 20 hr 49 min | Yes |
| 5 | 29 Apr 1931, 1:20 am GMT+8 | 29 Apr 1931, 10:20 pm GMT+8 | 21 hr 0 min | No |
| 6 | 28 May 1931, 7:30 am GMT+8 | 29 May 1931, 5:03 am GMT+8 | 21 hr 33 min | Yes |
| 7 | 26 Jun 1931, 1:31 pm GMT+8 | 27 Jun 1931, 11:54 am GMT+8 | 22 hr 22 min | Yes |
| 8 | 25 Jul 1931, 8:35 pm GMT+8 | 26 Jul 1931, 8:01 pm GMT+8 | 23 hr 26 min | Yes |
| 9 | 24 Aug 1931, 5:57 am GMT+8 | 25 Aug 1931, 6:36 am GMT+8 | 24 hr 39 min | Yes |
| 10 | 22 Sept 1931, 6:41 pm GMT+8 | 23 Sept 1931, 8:30 pm GMT+8 | 25 hr 49 min | Yes |
| 11 | 22 Oct 1931, 11:12 am GMT+8 | 23 Oct 1931, 1:48 pm GMT+8 | 26 hr 36 min | Yes |
| 12 | 21 Nov 1931, 6:49 am GMT+8 | 22 Nov 1931, 9:27 am GMT+8 | 26 hr 38 min | Yes |
| 13 | 21 Dec 1931, 3:43 am GMT+8 | 22 Dec 1931, 5:32 am GMT+8 | 25 hr 49 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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