Tritiya (तृतीया) dates and timings in Perth for 1911
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 1911, 1:24 am GMT+8 | 17 Jan 1911, 11:45 pm GMT+8 | 22 hr 21 min | No |
| 2 | 15 Feb 1911, 4:15 pm GMT+8 | 16 Feb 1911, 4:04 pm GMT+8 | 23 hr 49 min | Yes |
| 3 | 17 Mar 1911, 8:40 am GMT+8 | 18 Mar 1911, 9:57 am GMT+8 | 25 hr 16 min | Yes |
| 4 | 16 Apr 1911, 1:57 am GMT+8 | 17 Apr 1911, 4:13 am GMT+8 | 26 hr 15 min | Yes |
| 5 | 15 May 1911, 6:57 pm GMT+8 | 16 May 1911, 9:27 pm GMT+8 | 26 hr 30 min | Yes |
| 6 | 14 Jun 1911, 10:35 am GMT+8 | 15 Jun 1911, 12:40 pm GMT+8 | 26 hr 5 min | Yes |
| 7 | 14 Jul 1911, 12:20 am GMT+8 | 15 Jul 1911, 1:33 am GMT+8 | 25 hr 13 min | Yes |
| 8 | 12 Aug 1911, 12:16 pm GMT+8 | 13 Aug 1911, 12:23 pm GMT+8 | 24 hr 6 min | Yes |
| 9 | 10 Sept 1911, 10:49 pm GMT+8 | 11 Sept 1911, 9:44 pm GMT+8 | 22 hr 55 min | Yes |
| 10 | 10 Oct 1911, 8:31 am GMT+8 | 11 Oct 1911, 6:18 am GMT+8 | 21 hr 46 min | Yes |
| 11 | 8 Nov 1911, 5:54 pm GMT+8 | 9 Nov 1911, 2:46 pm GMT+8 | 20 hr 52 min | Yes |
| 12 | 8 Dec 1911, 3:28 am GMT+8 | 8 Dec 1911, 11:55 pm GMT+8 | 20 hr 26 min | No |
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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