Tritiya (तृतीया) dates and timings in Perth for 1989
Verified astronomical start and end times for lunar day 18 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 | 24 Jan 1989, 8:34 am GMT+8 | 25 Jan 1989, 10:46 am GMT+8 | 26 hr 12 min | Yes |
| 2 | 23 Feb 1989, 4:25 am GMT+8 | 24 Feb 1989, 7:04 am GMT+8 | 26 hr 39 min | Yes |
| 3 | 24 Mar 1989, 11:02 pm GMT+8 | 26 Mar 1989, 1:19 am GMT+8 | 26 hr 17 min | Yes |
| 4 | 23 Apr 1989, 2:58 pm GMT+8 | 24 Apr 1989, 4:18 pm GMT+8 | 25 hr 21 min | Yes |
| 5 | 23 May 1989, 3:48 am GMT+8 | 24 May 1989, 3:58 am GMT+8 | 24 hr 10 min | Yes |
| 6 | 21 Jun 1989, 1:57 pm GMT+8 | 22 Jun 1989, 12:55 pm GMT+8 | 22 hr 58 min | Yes |
| 7 | 20 Jul 1989, 10:13 pm GMT+8 | 21 Jul 1989, 8:04 pm GMT+8 | 21 hr 51 min | Yes |
| 8 | 19 Aug 1989, 5:28 am GMT+8 | 20 Aug 1989, 2:26 am GMT+8 | 20 hr 58 min | Yes |
| 9 | 17 Sept 1989, 12:40 pm GMT+8 | 18 Sept 1989, 9:08 am GMT+8 | 20 hr 28 min | Yes |
| 10 | 16 Oct 1989, 8:47 pm GMT+8 | 17 Oct 1989, 5:17 pm GMT+8 | 20 hr 30 min | Yes |
| 11 | 15 Nov 1989, 6:46 am GMT+8 | 16 Nov 1989, 3:54 am GMT+8 | 21 hr 8 min | Yes |
| 12 | 14 Dec 1989, 7:18 pm GMT+8 | 15 Dec 1989, 5:37 pm GMT+8 | 22 hr 19 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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