Trayodashi (त्रयोदशी) dates and timings in Perth for 1999
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 | 29 Jan 1999, 5:10 am GMT+8 | 30 Jan 1999, 3:09 am GMT+8 | 21 hr 59 min | Yes |
| 2 | 27 Feb 1999, 3:46 pm GMT+8 | 28 Feb 1999, 3:05 pm GMT+8 | 23 hr 20 min | Yes |
| 3 | 29 Mar 1999, 3:43 am GMT+8 | 30 Mar 1999, 4:23 am GMT+8 | 24 hr 39 min | Yes |
| 4 | 27 Apr 1999, 5:05 pm GMT+8 | 28 Apr 1999, 6:46 pm GMT+8 | 25 hr 42 min | Yes |
| 5 | 27 May 1999, 7:37 am GMT+8 | 28 May 1999, 9:54 am GMT+8 | 26 hr 17 min | Yes |
| 6 | 25 Jun 1999, 11:02 pm GMT+8 | 27 Jun 1999, 1:24 am GMT+8 | 26 hr 22 min | Yes |
| 7 | 25 Jul 1999, 2:59 pm GMT+8 | 26 Jul 1999, 4:52 pm GMT+8 | 25 hr 53 min | Yes |
| 8 | 24 Aug 1999, 6:58 am GMT+8 | 25 Aug 1999, 7:50 am GMT+8 | 24 hr 52 min | Yes |
| 9 | 22 Sept 1999, 10:19 pm GMT+8 | 23 Sept 1999, 9:49 pm GMT+8 | 23 hr 30 min | Yes |
| 10 | 22 Oct 1999, 12:28 pm GMT+8 | 23 Oct 1999, 10:35 am GMT+8 | 22 hr 6 min | Yes |
| 11 | 21 Nov 1999, 1:12 am GMT+8 | 21 Nov 1999, 10:14 pm GMT+8 | 21 hr 2 min | No |
| 12 | 20 Dec 1999, 12:34 pm GMT+8 | 21 Dec 1999, 9:06 am GMT+8 | 20 hr 31 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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