Trayodashi (त्रयोदशी) dates and timings in Perth for 2031
Verified astronomical start and end times for lunar day 28 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 | 20 Jan 2031, 10:46 pm GMT+8 | 21 Jan 2031, 7:25 pm GMT+8 | 20 hr 40 min | Yes |
| 2 | 19 Feb 2031, 8:08 am GMT+8 | 20 Feb 2031, 5:15 am GMT+8 | 21 hr 6 min | Yes |
| 3 | 20 Mar 2031, 4:50 pm GMT+8 | 21 Mar 2031, 2:50 pm GMT+8 | 22 hr 0 min | Yes |
| 4 | 19 Apr 2031, 1:46 am GMT+8 | 20 Apr 2031, 1:02 am GMT+8 | 23 hr 16 min | Yes |
| 5 | 18 May 2031, 11:59 am GMT+8 | 19 May 2031, 12:38 pm GMT+8 | 24 hr 39 min | Yes |
| 6 | 17 Jun 2031, 12:06 am GMT+8 | 18 Jun 2031, 1:56 am GMT+8 | 25 hr 49 min | Yes |
| 7 | 16 Jul 2031, 2:15 pm GMT+8 | 17 Jul 2031, 4:42 pm GMT+8 | 26 hr 28 min | Yes |
| 8 | 15 Aug 2031, 6:00 am GMT+8 | 16 Aug 2031, 8:26 am GMT+8 | 26 hr 25 min | Yes |
| 9 | 13 Sept 2031, 10:45 pm GMT+8 | 15 Sept 2031, 12:32 am GMT+8 | 25 hr 47 min | Yes |
| 10 | 13 Oct 2031, 3:52 pm GMT+8 | 14 Oct 2031, 4:35 pm GMT+8 | 24 hr 43 min | Yes |
| 11 | 12 Nov 2031, 8:40 am GMT+8 | 13 Nov 2031, 8:06 am GMT+8 | 23 hr 26 min | Yes |
| 12 | 12 Dec 2031, 12:23 am GMT+8 | 12 Dec 2031, 10:31 pm GMT+8 | 22 hr 8 min | No |
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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