Trayodashi (त्रयोदशी) dates and timings in Perth for 1920
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 1920, 3:19 pm GMT+8 | 4 Jan 1920, 11:59 am GMT+8 | 20 hr 40 min | Yes |
| 2 | 2 Feb 1920, 1:01 am GMT+8 | 2 Feb 1920, 10:08 pm GMT+8 | 21 hr 7 min | No |
| 3 | 2 Mar 1920, 10:13 am GMT+8 | 3 Mar 1920, 8:14 am GMT+8 | 22 hr 1 min | Yes |
| 4 | 31 Mar 1920, 7:43 pm GMT+8 | 1 Apr 1920, 7:00 pm GMT+8 | 23 hr 16 min | Yes |
| 5 | 30 Apr 1920, 6:27 am GMT+8 | 1 May 1920, 7:07 am GMT+8 | 24 hr 40 min | Yes |
| 6 | 29 May 1920, 6:58 pm GMT+8 | 30 May 1920, 8:48 pm GMT+8 | 25 hr 50 min | Yes |
| 7 | 28 Jun 1920, 9:17 am GMT+8 | 29 Jun 1920, 11:45 am GMT+8 | 26 hr 27 min | Yes |
| 8 | 28 Jul 1920, 12:56 am GMT+8 | 29 Jul 1920, 3:19 am GMT+8 | 26 hr 23 min | Yes |
| 9 | 26 Aug 1920, 5:16 pm GMT+8 | 27 Aug 1920, 6:58 pm GMT+8 | 25 hr 43 min | Yes |
| 10 | 25 Sept 1920, 9:43 am GMT+8 | 26 Sept 1920, 10:21 am GMT+8 | 24 hr 38 min | Yes |
| 11 | 25 Oct 1920, 1:49 am GMT+8 | 26 Oct 1920, 1:11 am GMT+8 | 23 hr 22 min | Yes |
| 12 | 23 Nov 1920, 5:03 pm GMT+8 | 24 Nov 1920, 3:09 pm GMT+8 | 22 hr 7 min | Yes |
| 13 | 23 Dec 1920, 6:43 am GMT+8 | 24 Dec 1920, 3:48 am GMT+8 | 21 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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