Chaturthi (चतुर्थी) dates and timings in Perth for 1931
Verified astronomical start and end times for lunar day 4 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 | 22 Jan 1931, 9:12 am GMT+8 | 23 Jan 1931, 11:55 am GMT+8 | 26 hr 43 min | Yes |
| 2 | 21 Feb 1931, 5:08 am GMT+8 | 22 Feb 1931, 7:39 am GMT+8 | 26 hr 31 min | Yes |
| 3 | 22 Mar 1931, 10:38 pm GMT+8 | 24 Mar 1931, 12:11 am GMT+8 | 25 hr 34 min | Yes |
| 4 | 21 Apr 1931, 12:29 pm GMT+8 | 22 Apr 1931, 12:43 pm GMT+8 | 24 hr 13 min | Yes |
| 5 | 20 May 1931, 10:41 pm GMT+8 | 21 May 1931, 9:36 pm GMT+8 | 22 hr 55 min | Yes |
| 6 | 19 Jun 1931, 6:11 am GMT+8 | 20 Jun 1931, 4:04 am GMT+8 | 21 hr 53 min | Yes |
| 7 | 18 Jul 1931, 12:20 pm GMT+8 | 19 Jul 1931, 9:32 am GMT+8 | 21 hr 13 min | Yes |
| 8 | 16 Aug 1931, 6:27 pm GMT+8 | 17 Aug 1931, 3:22 pm GMT+8 | 20 hr 55 min | Yes |
| 9 | 15 Sept 1931, 1:42 am GMT+8 | 15 Sept 1931, 10:41 pm GMT+8 | 20 hr 59 min | No |
| 10 | 14 Oct 1931, 10:54 am GMT+8 | 15 Oct 1931, 8:23 am GMT+8 | 21 hr 28 min | Yes |
| 11 | 12 Nov 1931, 10:43 pm GMT+8 | 13 Nov 1931, 9:09 pm GMT+8 | 22 hr 26 min | Yes |
| 12 | 12 Dec 1931, 1:30 pm GMT+8 | 13 Dec 1931, 1:19 pm GMT+8 | 23 hr 49 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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