Trayodashi (त्रयोदशी) dates and timings in Perth for 1973
Verified astronomical start and end times for lunar day 13 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 | 16 Jan 1973, 2:23 pm GMT+8 | 17 Jan 1973, 11:19 am GMT+8 | 20 hr 57 min | Yes |
| 2 | 15 Feb 1973, 12:04 am GMT+8 | 15 Feb 1973, 9:51 pm GMT+8 | 21 hr 47 min | No |
| 3 | 16 Mar 1973, 9:53 am GMT+8 | 17 Mar 1973, 8:46 am GMT+8 | 22 hr 53 min | Yes |
| 4 | 14 Apr 1973, 8:21 pm GMT+8 | 15 Apr 1973, 8:26 pm GMT+8 | 24 hr 5 min | Yes |
| 5 | 14 May 1973, 8:02 am GMT+8 | 15 May 1973, 9:18 am GMT+8 | 25 hr 16 min | Yes |
| 6 | 12 Jun 1973, 9:25 pm GMT+8 | 13 Jun 1973, 11:37 pm GMT+8 | 26 hr 11 min | Yes |
| 7 | 12 Jul 1973, 12:34 pm GMT+8 | 13 Jul 1973, 3:08 pm GMT+8 | 26 hr 34 min | Yes |
| 8 | 11 Aug 1973, 4:56 am GMT+8 | 12 Aug 1973, 7:08 am GMT+8 | 26 hr 12 min | Yes |
| 9 | 9 Sept 1973, 9:38 pm GMT+8 | 10 Sept 1973, 10:47 pm GMT+8 | 25 hr 9 min | Yes |
| 10 | 9 Oct 1973, 1:45 pm GMT+8 | 10 Oct 1973, 1:31 pm GMT+8 | 23 hr 45 min | Yes |
| 11 | 8 Nov 1973, 4:51 am GMT+8 | 9 Nov 1973, 3:15 am GMT+8 | 22 hr 25 min | Yes |
| 12 | 7 Dec 1973, 6:43 pm GMT+8 | 8 Dec 1973, 4:05 pm GMT+8 | 21 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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