Trayodashi (त्रयोदशी) dates and timings in Perth for 1987
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 | 27 Jan 1987, 8:32 am GMT+8 | 28 Jan 1987, 5:00 am GMT+8 | 20 hr 28 min | Yes |
| 2 | 25 Feb 1987, 5:32 pm GMT+8 | 26 Feb 1987, 2:29 pm GMT+8 | 20 hr 57 min | Yes |
| 3 | 27 Mar 1987, 1:59 am GMT+8 | 27 Mar 1987, 11:55 pm GMT+8 | 21 hr 56 min | No |
| 4 | 25 Apr 1987, 10:47 am GMT+8 | 26 Apr 1987, 9:59 am GMT+8 | 23 hr 11 min | Yes |
| 5 | 24 May 1987, 8:42 pm GMT+8 | 25 May 1987, 9:09 pm GMT+8 | 24 hr 27 min | Yes |
| 6 | 23 Jun 1987, 8:12 am GMT+8 | 24 Jun 1987, 9:43 am GMT+8 | 25 hr 31 min | Yes |
| 7 | 22 Jul 1987, 9:37 pm GMT+8 | 23 Jul 1987, 11:50 pm GMT+8 | 26 hr 13 min | Yes |
| 8 | 21 Aug 1987, 12:59 pm GMT+8 | 22 Aug 1987, 3:26 pm GMT+8 | 26 hr 27 min | Yes |
| 9 | 20 Sept 1987, 6:04 am GMT+8 | 21 Sept 1987, 8:09 am GMT+8 | 26 hr 5 min | Yes |
| 10 | 20 Oct 1987, 12:01 am GMT+8 | 21 Oct 1987, 1:06 am GMT+8 | 25 hr 5 min | Yes |
| 11 | 18 Nov 1987, 5:37 pm GMT+8 | 19 Nov 1987, 5:16 pm GMT+8 | 23 hr 39 min | Yes |
| 12 | 18 Dec 1987, 9:38 am GMT+8 | 19 Dec 1987, 7:49 am GMT+8 | 22 hr 11 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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