Trayodashi (त्रयोदशी) dates and timings in Perth for 1977
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 | 17 Jan 1977, 5:34 am GMT+8 | 18 Jan 1977, 2:56 am GMT+8 | 21 hr 22 min | Yes |
| 2 | 15 Feb 1977, 3:19 pm GMT+8 | 16 Feb 1977, 1:43 pm GMT+8 | 22 hr 24 min | Yes |
| 3 | 17 Mar 1977, 1:53 am GMT+8 | 18 Mar 1977, 1:38 am GMT+8 | 23 hr 45 min | Yes |
| 4 | 15 Apr 1977, 1:57 pm GMT+8 | 16 Apr 1977, 3:05 pm GMT+8 | 25 hr 8 min | Yes |
| 5 | 15 May 1977, 3:46 am GMT+8 | 16 May 1977, 5:56 am GMT+8 | 26 hr 10 min | Yes |
| 6 | 13 Jun 1977, 6:59 pm GMT+8 | 14 Jun 1977, 9:32 pm GMT+8 | 26 hr 33 min | Yes |
| 7 | 13 Jul 1977, 10:52 am GMT+8 | 14 Jul 1977, 1:07 pm GMT+8 | 26 hr 15 min | Yes |
| 8 | 12 Aug 1977, 2:48 am GMT+8 | 13 Aug 1977, 4:12 am GMT+8 | 25 hr 24 min | Yes |
| 9 | 10 Sept 1977, 6:22 pm GMT+8 | 11 Sept 1977, 6:36 pm GMT+8 | 24 hr 15 min | Yes |
| 10 | 10 Oct 1977, 9:19 am GMT+8 | 11 Oct 1977, 8:18 am GMT+8 | 22 hr 59 min | Yes |
| 11 | 8 Nov 1977, 11:22 pm GMT+8 | 9 Nov 1977, 9:09 pm GMT+8 | 21 hr 48 min | Yes |
| 12 | 8 Dec 1977, 12:03 pm GMT+8 | 9 Dec 1977, 8:56 am GMT+8 | 20 hr 53 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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