Trayodashi (त्रयोदशी) dates and timings in Perth for 1917
Verified astronomical start and end times for lunar day 28 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 | 21 Jan 1917, 2:54 am GMT+9 | 21 Jan 1917, 11:49 pm GMT+9 | 20 hr 55 min | No |
| 2 | 19 Feb 1917, 1:52 pm GMT+9 | 20 Feb 1917, 10:28 am GMT+9 | 20 hr 37 min | Yes |
| 3 | 20 Mar 1917, 10:49 pm GMT+9 | 21 Mar 1917, 7:34 pm GMT+9 | 20 hr 45 min | Yes |
| 4 | 19 Apr 1917, 5:19 am GMT+8 | 20 Apr 1917, 2:40 am GMT+8 | 21 hr 21 min | Yes |
| 5 | 18 May 1917, 12:25 pm GMT+8 | 19 May 1917, 10:49 am GMT+8 | 22 hr 23 min | Yes |
| 6 | 16 Jun 1917, 8:27 pm GMT+8 | 17 Jun 1917, 8:10 pm GMT+8 | 23 hr 43 min | Yes |
| 7 | 16 Jul 1917, 6:33 am GMT+8 | 17 Jul 1917, 7:38 am GMT+8 | 25 hr 4 min | Yes |
| 8 | 14 Aug 1917, 7:25 pm GMT+8 | 15 Aug 1917, 9:32 pm GMT+8 | 26 hr 7 min | Yes |
| 9 | 13 Sept 1917, 11:01 am GMT+8 | 14 Sept 1917, 1:35 pm GMT+8 | 26 hr 33 min | Yes |
| 10 | 13 Oct 1917, 4:45 am GMT+8 | 14 Oct 1917, 7:03 am GMT+8 | 26 hr 18 min | Yes |
| 11 | 11 Nov 1917, 11:34 pm GMT+8 | 13 Nov 1917, 1:02 am GMT+8 | 25 hr 28 min | Yes |
| 12 | 11 Dec 1917, 6:19 pm GMT+8 | 12 Dec 1917, 6:34 pm GMT+8 | 24 hr 15 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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