Tritiya (तृतीया) dates and timings in Perth for 1997
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 | 26 Jan 1997, 4:15 am GMT+8 | 27 Jan 1997, 6:58 am GMT+8 | 26 hr 43 min | Yes |
| 2 | 24 Feb 1997, 11:31 pm GMT+8 | 26 Feb 1997, 1:44 am GMT+8 | 26 hr 14 min | Yes |
| 3 | 26 Mar 1997, 4:08 pm GMT+8 | 27 Mar 1997, 5:11 pm GMT+8 | 25 hr 3 min | Yes |
| 4 | 25 Apr 1997, 5:10 am GMT+8 | 26 Apr 1997, 4:46 am GMT+8 | 23 hr 36 min | Yes |
| 5 | 24 May 1997, 2:53 pm GMT+8 | 25 May 1997, 1:11 pm GMT+8 | 22 hr 18 min | Yes |
| 6 | 22 Jun 1997, 10:21 pm GMT+8 | 23 Jun 1997, 7:40 pm GMT+8 | 21 hr 19 min | Yes |
| 7 | 22 Jul 1997, 4:51 am GMT+8 | 23 Jul 1997, 1:36 am GMT+8 | 20 hr 45 min | Yes |
| 8 | 20 Aug 1997, 11:36 am GMT+8 | 21 Aug 1997, 8:09 am GMT+8 | 20 hr 34 min | Yes |
| 9 | 18 Sept 1997, 7:31 pm GMT+8 | 19 Sept 1997, 4:19 pm GMT+8 | 20 hr 47 min | Yes |
| 10 | 18 Oct 1997, 5:22 am GMT+8 | 19 Oct 1997, 2:50 am GMT+8 | 21 hr 28 min | Yes |
| 11 | 16 Nov 1997, 5:42 pm GMT+8 | 17 Nov 1997, 4:20 pm GMT+8 | 22 hr 38 min | Yes |
| 12 | 16 Dec 1997, 8:54 am GMT+8 | 17 Dec 1997, 9:03 am GMT+8 | 24 hr 9 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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