Tritiya (तृतीया) dates and timings in Adelaide for 1990
Verified astronomical start and end times for lunar day 18 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 | 13 Jan 1990, 1:02 pm GMT+10:30 | 14 Jan 1990, 12:48 pm GMT+10:30 | 23 hr 46 min | Yes |
| 2 | 12 Feb 1990, 6:19 am GMT+10:30 | 13 Feb 1990, 7:26 am GMT+10:30 | 25 hr 7 min | Yes |
| 3 | 14 Mar 1990, 12:28 am GMT+10:30 | 15 Mar 1990, 2:32 am GMT+10:30 | 26 hr 3 min | Yes |
| 4 | 12 Apr 1990, 5:16 pm GMT+9:30 | 13 Apr 1990, 7:43 pm GMT+9:30 | 26 hr 27 min | Yes |
| 5 | 12 May 1990, 9:46 am GMT+9:30 | 13 May 1990, 12:01 pm GMT+9:30 | 26 hr 14 min | Yes |
| 6 | 11 Jun 1990, 12:21 am GMT+9:30 | 12 Jun 1990, 1:49 am GMT+9:30 | 25 hr 28 min | Yes |
| 7 | 10 Jul 1990, 12:43 pm GMT+9:30 | 11 Jul 1990, 12:59 pm GMT+9:30 | 24 hr 16 min | Yes |
| 8 | 8 Aug 1990, 10:56 pm GMT+9:30 | 9 Aug 1990, 9:50 pm GMT+9:30 | 22 hr 54 min | Yes |
| 9 | 7 Sept 1990, 7:33 am GMT+9:30 | 8 Sept 1990, 5:13 am GMT+9:30 | 21 hr 41 min | Yes |
| 10 | 6 Oct 1990, 3:30 pm GMT+9:30 | 7 Oct 1990, 12:20 pm GMT+9:30 | 20 hr 50 min | Yes |
| 11 | 5 Nov 1990, 12:57 am GMT+10:30 | 5 Nov 1990, 9:27 pm GMT+10:30 | 20 hr 30 min | No |
| 12 | 4 Dec 1990, 10:48 am GMT+10:30 | 5 Dec 1990, 7:31 am GMT+10:30 | 20 hr 43 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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