Trayodashi (त्रयोदशी) dates and timings in Perth for 1939
Verified astronomical start and end times for lunar day 13 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 | 3 Jan 1939, 3:24 pm GMT+8 | 4 Jan 1939, 12:33 pm GMT+8 | 21 hr 9 min | Yes |
| 2 | 2 Feb 1939, 3:08 am GMT+8 | 2 Feb 1939, 11:39 pm GMT+8 | 20 hr 31 min | No |
| 3 | 3 Mar 1939, 12:40 pm GMT+8 | 4 Mar 1939, 9:08 am GMT+8 | 20 hr 28 min | Yes |
| 4 | 1 Apr 1939, 8:38 pm GMT+8 | 2 Apr 1939, 5:40 pm GMT+8 | 21 hr 2 min | Yes |
| 5 | 1 May 1939, 4:06 am GMT+8 | 2 May 1939, 2:09 am GMT+8 | 22 hr 3 min | Yes |
| 6 | 30 May 1939, 12:07 pm GMT+8 | 31 May 1939, 11:24 am GMT+8 | 23 hr 17 min | Yes |
| 7 | 28 Jun 1939, 9:34 pm GMT+8 | 29 Jun 1939, 10:05 pm GMT+8 | 24 hr 31 min | Yes |
| 8 | 28 Jul 1939, 9:05 am GMT+8 | 29 Jul 1939, 10:39 am GMT+8 | 25 hr 34 min | Yes |
| 9 | 26 Aug 1939, 11:04 pm GMT+8 | 28 Aug 1939, 1:19 am GMT+8 | 26 hr 16 min | Yes |
| 10 | 25 Sept 1939, 3:33 pm GMT+8 | 26 Sept 1939, 6:00 pm GMT+8 | 26 hr 27 min | Yes |
| 11 | 25 Oct 1939, 10:00 am GMT+8 | 26 Oct 1939, 12:00 pm GMT+8 | 26 hr 0 min | Yes |
| 12 | 24 Nov 1939, 5:09 am GMT+8 | 25 Nov 1939, 6:02 am GMT+8 | 24 hr 53 min | Yes |
| 13 | 23 Dec 1939, 11:21 pm GMT+8 | 24 Dec 1939, 10:44 pm GMT+8 | 23 hr 23 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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