Tritiya (तृतीया) dates and timings in Perth for 1985
Verified astronomical start and end times for lunar day 18 in Perth, shown in Australia/Perth.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 9 Jan 1985, 7:11 am GMT+8 | 10 Jan 1985, 5:09 am GMT+8 | 21 hr 59 min | Yes |
| 2 | 7 Feb 1985, 5:42 pm GMT+8 | 8 Feb 1985, 2:44 pm GMT+8 | 21 hr 2 min | Yes |
| 3 | 9 Mar 1985, 3:08 am GMT+8 | 9 Mar 1985, 11:44 pm GMT+8 | 20 hr 36 min | No |
| 4 | 7 Apr 1985, 12:04 pm GMT+8 | 8 Apr 1985, 8:43 am GMT+8 | 20 hr 39 min | Yes |
| 5 | 6 May 1985, 8:58 pm GMT+8 | 7 May 1985, 6:06 pm GMT+8 | 21 hr 8 min | Yes |
| 6 | 5 Jun 1985, 6:18 am GMT+8 | 6 Jun 1985, 4:17 am GMT+8 | 21 hr 59 min | Yes |
| 7 | 4 Jul 1985, 4:41 pm GMT+8 | 5 Jul 1985, 3:51 pm GMT+8 | 23 hr 10 min | Yes |
| 8 | 3 Aug 1985, 4:53 am GMT+8 | 4 Aug 1985, 5:25 am GMT+8 | 24 hr 32 min | Yes |
| 9 | 1 Sept 1985, 7:30 pm GMT+8 | 2 Sept 1985, 9:19 pm GMT+8 | 25 hr 49 min | Yes |
| 10 | 1 Oct 1985, 12:30 pm GMT+8 | 2 Oct 1985, 3:06 pm GMT+8 | 26 hr 36 min | Yes |
| 11 | 31 Oct 1985, 6:57 am GMT+8 | 1 Nov 1985, 9:32 am GMT+8 | 26 hr 34 min | Yes |
| 12 | 30 Nov 1985, 1:13 am GMT+8 | 1 Dec 1985, 3:00 am GMT+8 | 25 hr 46 min | Yes |
| 13 | 29 Dec 1985, 5:49 pm GMT+8 | 30 Dec 1985, 6:21 pm GMT+8 | 24 hr 32 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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