Trayodashi (त्रयोदशी) dates and timings in Perth for 2081
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 | 22 Jan 2081, 10:13 pm GMT+8 | 23 Jan 2081, 7:12 pm GMT+8 | 21 hr 0 min | Yes |
| 2 | 21 Feb 2081, 9:25 am GMT+8 | 22 Feb 2081, 5:57 am GMT+8 | 20 hr 33 min | Yes |
| 3 | 22 Mar 2081, 6:38 pm GMT+8 | 23 Mar 2081, 3:17 pm GMT+8 | 20 hr 39 min | Yes |
| 4 | 21 Apr 2081, 2:27 am GMT+8 | 21 Apr 2081, 11:37 pm GMT+8 | 21 hr 10 min | No |
| 5 | 20 May 2081, 9:36 am GMT+8 | 21 May 2081, 7:36 am GMT+8 | 22 hr 1 min | Yes |
| 6 | 18 Jun 2081, 5:03 pm GMT+8 | 19 Jun 2081, 4:10 pm GMT+8 | 23 hr 6 min | Yes |
| 7 | 18 Jul 2081, 1:59 am GMT+8 | 19 Jul 2081, 2:20 am GMT+8 | 24 hr 21 min | Yes |
| 8 | 16 Aug 2081, 1:27 pm GMT+8 | 17 Aug 2081, 3:02 pm GMT+8 | 25 hr 35 min | Yes |
| 9 | 15 Sept 2081, 4:06 am GMT+8 | 16 Sept 2081, 6:34 am GMT+8 | 26 hr 28 min | Yes |
| 10 | 14 Oct 2081, 9:43 pm GMT+8 | 16 Oct 2081, 12:20 am GMT+8 | 26 hr 37 min | Yes |
| 11 | 13 Nov 2081, 5:02 pm GMT+8 | 14 Nov 2081, 6:59 pm GMT+8 | 25 hr 57 min | Yes |
| 12 | 13 Dec 2081, 12:22 pm GMT+8 | 14 Dec 2081, 1:02 pm GMT+8 | 24 hr 40 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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