Trayodashi (त्रयोदशी) dates and timings in Perth for 2009
Verified astronomical start and end times for lunar day 13 in Perth, shown in Australia/Perth.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 8 Jan 2009, 11:18 pm GMT+9 | 9 Jan 2009, 7:48 pm GMT+9 | 20 hr 30 min | Yes |
| 2 | 7 Feb 2009, 9:11 am GMT+9 | 8 Feb 2009, 6:00 am GMT+9 | 20 hr 50 min | Yes |
| 3 | 8 Mar 2009, 6:19 pm GMT+9 | 9 Mar 2009, 3:54 pm GMT+9 | 21 hr 34 min | Yes |
| 4 | 7 Apr 2009, 2:12 am GMT+8 | 8 Apr 2009, 12:47 am GMT+8 | 22 hr 35 min | Yes |
| 5 | 6 May 2009, 11:30 am GMT+8 | 7 May 2009, 11:16 am GMT+8 | 23 hr 46 min | Yes |
| 6 | 4 Jun 2009, 10:03 pm GMT+8 | 5 Jun 2009, 11:01 pm GMT+8 | 24 hr 58 min | Yes |
| 7 | 4 Jul 2009, 10:34 am GMT+8 | 5 Jul 2009, 12:35 pm GMT+8 | 26 hr 0 min | Yes |
| 8 | 3 Aug 2009, 1:21 am GMT+8 | 4 Aug 2009, 3:55 am GMT+8 | 26 hr 34 min | Yes |
| 9 | 1 Sept 2009, 6:01 pm GMT+8 | 2 Sept 2009, 8:23 pm GMT+8 | 26 hr 22 min | Yes |
| 10 | 1 Oct 2009, 11:34 am GMT+8 | 2 Oct 2009, 1:01 pm GMT+8 | 25 hr 26 min | Yes |
| 11 | 31 Oct 2009, 4:53 am GMT+8 | 1 Nov 2009, 4:58 am GMT+8 | 24 hr 5 min | Yes |
| 12 | 29 Nov 2009, 9:08 pm GMT+8 | 30 Nov 2009, 7:50 pm GMT+8 | 22 hr 41 min | Yes |
| 13 | 29 Dec 2009, 11:51 am GMT+8 | 30 Dec 2009, 9:26 am GMT+8 | 21 hr 34 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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