Trayodashi (त्रयोदशी) dates and timings in Adelaide for 1981
Verified astronomical start and end times for lunar day 13 in Adelaide, shown in Australia/Adelaide.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 17 Jan 1981, 10:49 pm GMT+10:30 | 18 Jan 1981, 8:55 pm GMT+10:30 | 22 hr 6 min | Yes |
| 2 | 16 Feb 1981, 9:48 am GMT+10:30 | 17 Feb 1981, 9:16 am GMT+10:30 | 23 hr 28 min | Yes |
| 3 | 17 Mar 1981, 9:21 pm GMT+9:30 | 18 Mar 1981, 10:09 pm GMT+9:30 | 24 hr 49 min | Yes |
| 4 | 16 Apr 1981, 11:21 am GMT+9:30 | 17 Apr 1981, 1:10 pm GMT+9:30 | 25 hr 49 min | Yes |
| 5 | 16 May 1981, 2:26 am GMT+9:30 | 17 May 1981, 4:47 am GMT+9:30 | 26 hr 20 min | Yes |
| 6 | 14 Jun 1981, 6:11 pm GMT+9:30 | 15 Jun 1981, 8:31 pm GMT+9:30 | 26 hr 20 min | Yes |
| 7 | 14 Jul 1981, 10:08 am GMT+9:30 | 15 Jul 1981, 11:54 am GMT+9:30 | 25 hr 46 min | Yes |
| 8 | 13 Aug 1981, 1:47 am GMT+9:30 | 14 Aug 1981, 2:30 am GMT+9:30 | 24 hr 43 min | Yes |
| 9 | 11 Sept 1981, 4:35 pm GMT+9:30 | 12 Sept 1981, 3:55 pm GMT+9:30 | 23 hr 21 min | Yes |
| 10 | 11 Oct 1981, 6:07 am GMT+9:30 | 12 Oct 1981, 4:05 am GMT+9:30 | 21 hr 58 min | Yes |
| 11 | 9 Nov 1981, 7:16 pm GMT+10:30 | 10 Nov 1981, 4:13 pm GMT+10:30 | 20 hr 57 min | Yes |
| 12 | 9 Dec 1981, 6:16 am GMT+10:30 | 10 Dec 1981, 2:46 am GMT+10:30 | 20 hr 30 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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