Trayodashi (त्रयोदशी) dates and timings in Sydney for 2031
Verified astronomical start and end times for lunar day 13 in Sydney, shown in Australia/Sydney.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 5 Jan 2031, 9:32 pm GMT+11 | 7 Jan 2031, 12:17 am GMT+11 | 26 hr 46 min | Yes |
| 2 | 4 Feb 2031, 6:05 pm GMT+11 | 5 Feb 2031, 8:24 pm GMT+11 | 26 hr 19 min | Yes |
| 3 | 6 Mar 2031, 1:36 pm GMT+11 | 7 Mar 2031, 2:48 pm GMT+11 | 25 hr 12 min | Yes |
| 4 | 5 Apr 2031, 6:37 am GMT+11 | 6 Apr 2031, 5:27 am GMT+10 | 23 hr 50 min | Yes |
| 5 | 4 May 2031, 7:38 pm GMT+10 | 5 May 2031, 6:12 pm GMT+10 | 22 hr 33 min | Yes |
| 6 | 3 Jun 2031, 6:51 am GMT+10 | 4 Jun 2031, 4:21 am GMT+10 | 21 hr 30 min | Yes |
| 7 | 2 Jul 2031, 3:42 pm GMT+10 | 3 Jul 2031, 12:29 pm GMT+10 | 20 hr 47 min | Yes |
| 8 | 31 Jul 2031, 10:53 pm GMT+10 | 1 Aug 2031, 7:20 pm GMT+10 | 20 hr 27 min | Yes |
| 9 | 30 Aug 2031, 5:18 am GMT+10 | 31 Aug 2031, 1:56 am GMT+10 | 20 hr 38 min | Yes |
| 10 | 28 Sept 2031, 12:07 pm GMT+10 | 29 Sept 2031, 9:28 am GMT+10 | 21 hr 22 min | Yes |
| 11 | 27 Oct 2031, 9:36 pm GMT+11 | 28 Oct 2031, 8:10 pm GMT+11 | 22 hr 34 min | Yes |
| 12 | 26 Nov 2031, 8:51 am GMT+11 | 27 Nov 2031, 8:54 am GMT+11 | 24 hr 3 min | Yes |
| 13 | 25 Dec 2031, 11:20 pm GMT+11 | 27 Dec 2031, 12:45 am GMT+11 | 25 hr 25 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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