Trayodashi (त्रयोदशी) dates and timings in Perth for 2011
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 | 17 Jan 2011, 10:59 am GMT+8 | 18 Jan 2011, 9:43 am GMT+8 | 22 hr 44 min | Yes |
| 2 | 16 Feb 2011, 1:40 am GMT+8 | 16 Feb 2011, 11:09 pm GMT+8 | 21 hr 29 min | No |
| 3 | 17 Mar 2011, 1:12 pm GMT+8 | 18 Mar 2011, 9:51 am GMT+8 | 20 hr 39 min | Yes |
| 4 | 15 Apr 2011, 9:54 pm GMT+8 | 16 Apr 2011, 6:17 pm GMT+8 | 20 hr 23 min | Yes |
| 5 | 15 May 2011, 4:41 am GMT+8 | 16 May 2011, 1:24 am GMT+8 | 20 hr 43 min | Yes |
| 6 | 13 Jun 2011, 10:50 am GMT+8 | 14 Jun 2011, 8:21 am GMT+8 | 21 hr 31 min | Yes |
| 7 | 12 Jul 2011, 5:35 pm GMT+8 | 13 Jul 2011, 4:14 pm GMT+8 | 22 hr 39 min | Yes |
| 8 | 11 Aug 2011, 2:03 am GMT+8 | 12 Aug 2011, 1:57 am GMT+8 | 23 hr 55 min | Yes |
| 9 | 9 Sept 2011, 1:06 pm GMT+8 | 10 Sept 2011, 2:13 pm GMT+8 | 25 hr 6 min | Yes |
| 10 | 9 Oct 2011, 3:19 am GMT+8 | 10 Oct 2011, 5:22 am GMT+8 | 26 hr 3 min | Yes |
| 11 | 7 Nov 2011, 8:43 pm GMT+8 | 8 Nov 2011, 11:16 pm GMT+8 | 26 hr 33 min | Yes |
| 12 | 7 Dec 2011, 4:32 pm GMT+8 | 8 Dec 2011, 6:54 pm GMT+8 | 26 hr 22 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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