Tritiya (तृतीया) dates and timings in Perth for 1987
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 | 17 Jan 1987, 2:45 pm GMT+8 | 18 Jan 1987, 4:29 pm GMT+8 | 25 hr 44 min | Yes |
| 2 | 16 Feb 1987, 7:14 am GMT+8 | 17 Feb 1987, 7:48 am GMT+8 | 24 hr 34 min | Yes |
| 3 | 17 Mar 1987, 8:45 pm GMT+8 | 18 Mar 1987, 7:54 pm GMT+8 | 23 hr 9 min | Yes |
| 4 | 16 Apr 1987, 7:08 am GMT+8 | 17 Apr 1987, 4:57 am GMT+8 | 21 hr 49 min | Yes |
| 5 | 15 May 1987, 3:00 pm GMT+8 | 16 May 1987, 11:51 am GMT+8 | 20 hr 51 min | Yes |
| 6 | 13 Jun 1987, 9:27 pm GMT+8 | 14 Jun 1987, 5:51 pm GMT+8 | 20 hr 25 min | Yes |
| 7 | 13 Jul 1987, 3:47 am GMT+8 | 14 Jul 1987, 12:19 am GMT+8 | 20 hr 32 min | Yes |
| 8 | 11 Aug 1987, 11:16 am GMT+8 | 12 Aug 1987, 8:24 am GMT+8 | 21 hr 9 min | Yes |
| 9 | 9 Sept 1987, 8:52 pm GMT+8 | 10 Sept 1987, 7:02 pm GMT+8 | 22 hr 9 min | Yes |
| 10 | 9 Oct 1987, 9:14 am GMT+8 | 10 Oct 1987, 8:38 am GMT+8 | 23 hr 24 min | Yes |
| 11 | 8 Nov 1987, 12:30 am GMT+8 | 9 Nov 1987, 1:14 am GMT+8 | 24 hr 44 min | Yes |
| 12 | 7 Dec 1987, 6:27 pm GMT+8 | 8 Dec 1987, 8:22 pm GMT+8 | 25 hr 55 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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