Trayodashi (त्रयोदशी) dates and timings in Perth for 1978
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 | 21 Jan 1978, 8:58 am GMT+8 | 22 Jan 1978, 11:29 am GMT+8 | 26 hr 31 min | Yes |
| 2 | 20 Feb 1978, 4:56 am GMT+8 | 21 Feb 1978, 6:51 am GMT+8 | 25 hr 55 min | Yes |
| 3 | 21 Mar 1978, 11:35 pm GMT+8 | 23 Mar 1978, 12:24 am GMT+8 | 24 hr 50 min | Yes |
| 4 | 20 Apr 1978, 3:42 pm GMT+8 | 21 Apr 1978, 3:10 pm GMT+8 | 23 hr 28 min | Yes |
| 5 | 20 May 1978, 4:41 am GMT+8 | 21 May 1978, 2:48 am GMT+8 | 22 hr 7 min | Yes |
| 6 | 18 Jun 1978, 2:41 pm GMT+8 | 19 Jun 1978, 11:43 am GMT+8 | 21 hr 2 min | Yes |
| 7 | 17 Jul 1978, 10:24 pm GMT+8 | 18 Jul 1978, 6:52 pm GMT+8 | 20 hr 27 min | Yes |
| 8 | 16 Aug 1978, 4:59 am GMT+8 | 17 Aug 1978, 1:25 am GMT+8 | 20 hr 26 min | Yes |
| 9 | 14 Sept 1978, 11:37 am GMT+8 | 15 Sept 1978, 8:36 am GMT+8 | 20 hr 59 min | Yes |
| 10 | 13 Oct 1978, 7:28 pm GMT+8 | 14 Oct 1978, 5:25 pm GMT+8 | 21 hr 57 min | Yes |
| 11 | 12 Nov 1978, 5:23 am GMT+8 | 13 Nov 1978, 4:34 am GMT+8 | 23 hr 11 min | Yes |
| 12 | 11 Dec 1978, 5:55 pm GMT+8 | 12 Dec 1978, 6:24 pm GMT+8 | 24 hr 29 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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