Trayodashi (त्रयोदशी) dates and timings in Adelaide for 1980
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 | 29 Jan 1980, 9:38 am GMT+10:30 | 30 Jan 1980, 10:15 am GMT+10:30 | 24 hr 37 min | Yes |
| 2 | 28 Feb 1980, 12:53 am GMT+10:30 | 29 Feb 1980, 2:47 am GMT+10:30 | 25 hr 54 min | Yes |
| 3 | 28 Mar 1980, 4:57 pm GMT+9:30 | 29 Mar 1980, 7:32 pm GMT+9:30 | 26 hr 35 min | Yes |
| 4 | 27 Apr 1980, 10:32 am GMT+9:30 | 28 Apr 1980, 1:00 pm GMT+9:30 | 26 hr 28 min | Yes |
| 5 | 27 May 1980, 3:20 am GMT+9:30 | 28 May 1980, 5:01 am GMT+9:30 | 25 hr 41 min | Yes |
| 6 | 25 Jun 1980, 6:36 pm GMT+9:30 | 26 Jun 1980, 7:08 pm GMT+9:30 | 24 hr 32 min | Yes |
| 7 | 25 Jul 1980, 8:14 am GMT+9:30 | 26 Jul 1980, 7:32 am GMT+9:30 | 23 hr 18 min | Yes |
| 8 | 23 Aug 1980, 8:26 pm GMT+9:30 | 24 Aug 1980, 6:34 pm GMT+9:30 | 22 hr 7 min | Yes |
| 9 | 22 Sept 1980, 7:27 am GMT+9:30 | 23 Sept 1980, 4:37 am GMT+9:30 | 21 hr 10 min | Yes |
| 10 | 21 Oct 1980, 5:29 pm GMT+9:30 | 22 Oct 1980, 2:03 pm GMT+9:30 | 20 hr 34 min | Yes |
| 11 | 20 Nov 1980, 3:51 am GMT+10:30 | 21 Nov 1980, 12:20 am GMT+10:30 | 20 hr 29 min | Yes |
| 12 | 19 Dec 1980, 1:03 pm GMT+10:30 | 20 Dec 1980, 10:05 am GMT+10:30 | 21 hr 1 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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