Trayodashi (त्रयोदशी) dates and timings in Perth for 1947
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 | 4 Jan 1947, 11:30 pm GMT+8 | 5 Jan 1947, 8:07 pm GMT+8 | 20 hr 37 min | Yes |
| 2 | 3 Feb 1947, 9:37 am GMT+8 | 4 Feb 1947, 6:22 am GMT+8 | 20 hr 45 min | Yes |
| 3 | 4 Mar 1947, 6:36 pm GMT+8 | 5 Mar 1947, 3:58 pm GMT+8 | 21 hr 21 min | Yes |
| 4 | 3 Apr 1947, 3:10 am GMT+8 | 4 Apr 1947, 1:33 am GMT+8 | 22 hr 23 min | Yes |
| 5 | 2 May 1947, 12:19 pm GMT+8 | 3 May 1947, 12:02 pm GMT+8 | 23 hr 43 min | Yes |
| 6 | 31 May 1947, 11:01 pm GMT+8 | 2 Jun 1947, 12:05 am GMT+8 | 25 hr 4 min | Yes |
| 7 | 30 Jun 1947, 11:48 am GMT+8 | 1 Jul 1947, 1:53 pm GMT+8 | 26 hr 5 min | Yes |
| 8 | 30 Jul 1947, 2:35 am GMT+8 | 31 Jul 1947, 5:05 am GMT+8 | 26 hr 30 min | Yes |
| 9 | 28 Aug 1947, 6:51 pm GMT+8 | 29 Aug 1947, 9:05 pm GMT+8 | 26 hr 14 min | Yes |
| 10 | 27 Sept 1947, 11:55 am GMT+8 | 28 Sept 1947, 1:19 pm GMT+8 | 25 hr 25 min | Yes |
| 11 | 27 Oct 1947, 5:07 am GMT+8 | 28 Oct 1947, 5:22 am GMT+8 | 24 hr 15 min | Yes |
| 12 | 25 Nov 1947, 9:45 pm GMT+8 | 26 Nov 1947, 8:41 pm GMT+8 | 22 hr 56 min | Yes |
| 13 | 25 Dec 1947, 12:56 pm GMT+8 | 26 Dec 1947, 10:38 am GMT+8 | 21 hr 42 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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