Trayodashi (त्रयोदशी) dates and timings in Perth for 1985
Verified astronomical start and end times for lunar day 28 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 | 18 Jan 1985, 12:21 pm GMT+8 | 19 Jan 1985, 11:23 am GMT+8 | 23 hr 2 min | Yes |
| 2 | 17 Feb 1985, 12:38 am GMT+8 | 18 Feb 1985, 12:56 am GMT+8 | 24 hr 18 min | Yes |
| 3 | 18 Mar 1985, 2:30 pm GMT+8 | 19 Mar 1985, 3:58 pm GMT+8 | 25 hr 29 min | Yes |
| 4 | 17 Apr 1985, 5:52 am GMT+8 | 18 Apr 1985, 8:12 am GMT+8 | 26 hr 20 min | Yes |
| 5 | 16 May 1985, 10:18 pm GMT+8 | 18 May 1985, 12:55 am GMT+8 | 26 hr 36 min | Yes |
| 6 | 15 Jun 1985, 2:56 pm GMT+8 | 16 Jun 1985, 5:03 pm GMT+8 | 26 hr 8 min | Yes |
| 7 | 15 Jul 1985, 6:45 am GMT+8 | 16 Jul 1985, 7:46 am GMT+8 | 25 hr 1 min | Yes |
| 8 | 13 Aug 1985, 9:08 pm GMT+8 | 14 Aug 1985, 8:45 pm GMT+8 | 23 hr 37 min | Yes |
| 9 | 12 Sept 1985, 10:03 am GMT+8 | 13 Sept 1985, 8:21 am GMT+8 | 22 hr 18 min | Yes |
| 10 | 11 Oct 1985, 9:51 pm GMT+8 | 12 Oct 1985, 7:09 pm GMT+8 | 21 hr 19 min | Yes |
| 11 | 10 Nov 1985, 8:53 am GMT+8 | 11 Nov 1985, 5:39 am GMT+8 | 20 hr 45 min | Yes |
| 12 | 9 Dec 1985, 7:21 pm GMT+8 | 10 Dec 1985, 3:59 pm GMT+8 | 20 hr 39 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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