Trayodashi (त्रयोदशी) dates and timings in Perth for 1989
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 | 19 Jan 1989, 4:43 am GMT+8 | 20 Jan 1989, 4:32 am GMT+8 | 23 hr 49 min | Yes |
| 2 | 17 Feb 1989, 6:34 pm GMT+8 | 18 Feb 1989, 7:49 pm GMT+8 | 25 hr 15 min | Yes |
| 3 | 19 Mar 1989, 10:33 am GMT+8 | 20 Mar 1989, 12:51 pm GMT+8 | 26 hr 18 min | Yes |
| 4 | 18 Apr 1989, 3:46 am GMT+8 | 19 Apr 1989, 6:23 am GMT+8 | 26 hr 37 min | Yes |
| 5 | 17 May 1989, 8:53 pm GMT+8 | 18 May 1989, 11:04 pm GMT+8 | 26 hr 11 min | Yes |
| 6 | 16 Jun 1989, 12:54 pm GMT+8 | 17 Jun 1989, 2:06 pm GMT+8 | 25 hr 13 min | Yes |
| 7 | 16 Jul 1989, 3:25 am GMT+8 | 17 Jul 1989, 3:25 am GMT+8 | 24 hr 0 min | Yes |
| 8 | 14 Aug 1989, 4:30 pm GMT+8 | 15 Aug 1989, 3:16 pm GMT+8 | 22 hr 46 min | Yes |
| 9 | 13 Sept 1989, 4:21 am GMT+8 | 14 Sept 1989, 2:01 am GMT+8 | 21 hr 40 min | Yes |
| 10 | 12 Oct 1989, 3:08 pm GMT+8 | 13 Oct 1989, 11:58 am GMT+8 | 20 hr 50 min | Yes |
| 11 | 11 Nov 1989, 1:02 am GMT+8 | 11 Nov 1989, 9:29 pm GMT+8 | 20 hr 27 min | No |
| 12 | 10 Dec 1989, 10:23 am GMT+8 | 11 Dec 1989, 7:02 am GMT+8 | 20 hr 39 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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