Trayodashi (त्रयोदशी) dates and timings in Sydney for 1980
Verified astronomical start and end times for lunar day 13 in Sydney, shown in Australia/Sydney.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 29 Jan 1980, 10:08 am GMT+11 | 30 Jan 1980, 10:45 am GMT+11 | 24 hr 37 min | Yes |
| 2 | 28 Feb 1980, 1:23 am GMT+11 | 29 Feb 1980, 3:17 am GMT+11 | 25 hr 54 min | Yes |
| 3 | 28 Mar 1980, 5:27 pm GMT+10 | 29 Mar 1980, 8:02 pm GMT+10 | 26 hr 35 min | Yes |
| 4 | 27 Apr 1980, 11:02 am GMT+10 | 28 Apr 1980, 1:30 pm GMT+10 | 26 hr 28 min | Yes |
| 5 | 27 May 1980, 3:50 am GMT+10 | 28 May 1980, 5:31 am GMT+10 | 25 hr 41 min | Yes |
| 6 | 25 Jun 1980, 7:06 pm GMT+10 | 26 Jun 1980, 7:38 pm GMT+10 | 24 hr 32 min | Yes |
| 7 | 25 Jul 1980, 8:44 am GMT+10 | 26 Jul 1980, 8:02 am GMT+10 | 23 hr 18 min | Yes |
| 8 | 23 Aug 1980, 8:56 pm GMT+10 | 24 Aug 1980, 7:04 pm GMT+10 | 22 hr 7 min | Yes |
| 9 | 22 Sept 1980, 7:57 am GMT+10 | 23 Sept 1980, 5:07 am GMT+10 | 21 hr 10 min | Yes |
| 10 | 21 Oct 1980, 5:59 pm GMT+10 | 22 Oct 1980, 2:33 pm GMT+10 | 20 hr 34 min | Yes |
| 11 | 20 Nov 1980, 4:21 am GMT+11 | 21 Nov 1980, 12:50 am GMT+11 | 20 hr 29 min | Yes |
| 12 | 19 Dec 1980, 1:33 pm GMT+11 | 20 Dec 1980, 10:35 am GMT+11 | 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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