Trayodashi (त्रयोदशी) dates and timings in Perth for 1909
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 | 3 Jan 1909, 8:49 pm GMT+8 | 4 Jan 1909, 8:51 pm GMT+8 | 24 hr 2 min | Yes |
| 2 | 2 Feb 1909, 11:20 am GMT+8 | 3 Feb 1909, 12:42 pm GMT+8 | 25 hr 22 min | Yes |
| 3 | 4 Mar 1909, 3:50 am GMT+8 | 5 Mar 1909, 6:04 am GMT+8 | 26 hr 14 min | Yes |
| 4 | 2 Apr 1909, 9:19 pm GMT+8 | 3 Apr 1909, 11:47 pm GMT+8 | 26 hr 29 min | Yes |
| 5 | 2 May 1909, 2:41 pm GMT+8 | 3 May 1909, 4:49 pm GMT+8 | 26 hr 8 min | Yes |
| 6 | 1 Jun 1909, 7:06 am GMT+8 | 2 Jun 1909, 8:24 am GMT+8 | 25 hr 17 min | Yes |
| 7 | 30 Jun 1909, 10:00 pm GMT+8 | 1 Jul 1909, 10:04 pm GMT+8 | 24 hr 3 min | Yes |
| 8 | 30 Jul 1909, 11:02 am GMT+8 | 31 Jul 1909, 9:44 am GMT+8 | 22 hr 41 min | Yes |
| 9 | 28 Aug 1909, 10:15 pm GMT+8 | 29 Aug 1909, 7:43 pm GMT+8 | 21 hr 28 min | Yes |
| 10 | 27 Sept 1909, 8:03 am GMT+8 | 28 Sept 1909, 4:43 am GMT+8 | 20 hr 40 min | Yes |
| 11 | 26 Oct 1909, 5:08 pm GMT+8 | 27 Oct 1909, 1:34 pm GMT+8 | 20 hr 26 min | Yes |
| 12 | 25 Nov 1909, 2:14 am GMT+8 | 25 Nov 1909, 11:02 pm GMT+8 | 20 hr 48 min | No |
| 13 | 24 Dec 1909, 11:55 am GMT+8 | 25 Dec 1909, 9:33 am GMT+8 | 21 hr 38 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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