Tritiya (तृतीया) dates and timings in Perth for 2100
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 | 28 Jan 2100, 6:16 am GMT+8 | 29 Jan 2100, 3:44 am GMT+8 | 21 hr 28 min | Yes |
| 2 | 26 Feb 2100, 4:27 pm GMT+8 | 27 Feb 2100, 1:12 pm GMT+8 | 20 hr 45 min | Yes |
| 3 | 28 Mar 2100, 1:39 am GMT+8 | 28 Mar 2100, 10:08 pm GMT+8 | 20 hr 29 min | No |
| 4 | 26 Apr 2100, 10:17 am GMT+8 | 27 Apr 2100, 7:03 am GMT+8 | 20 hr 46 min | Yes |
| 5 | 25 May 2100, 7:05 pm GMT+8 | 26 May 2100, 4:40 pm GMT+8 | 21 hr 35 min | Yes |
| 6 | 24 Jun 2100, 4:59 am GMT+8 | 25 Jun 2100, 3:49 am GMT+8 | 22 hr 51 min | Yes |
| 7 | 23 Jul 2100, 4:49 pm GMT+8 | 24 Jul 2100, 5:05 pm GMT+8 | 24 hr 16 min | Yes |
| 8 | 22 Aug 2100, 7:00 am GMT+8 | 23 Aug 2100, 8:31 am GMT+8 | 25 hr 31 min | Yes |
| 9 | 20 Sept 2100, 11:19 pm GMT+8 | 22 Sept 2100, 1:38 am GMT+8 | 26 hr 19 min | Yes |
| 10 | 20 Oct 2100, 5:01 pm GMT+8 | 21 Oct 2100, 7:30 pm GMT+8 | 26 hr 29 min | Yes |
| 11 | 19 Nov 2100, 11:02 am GMT+8 | 20 Nov 2100, 1:05 pm GMT+8 | 26 hr 4 min | Yes |
| 12 | 19 Dec 2100, 4:15 am GMT+8 | 20 Dec 2100, 5:21 am GMT+8 | 25 hr 7 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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