Chaturthi (चतुर्थी) dates and timings in Perth for 1917
Verified astronomical start and end times for lunar day 19 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 | 12 Jan 1917, 12:41 am GMT+9 | 13 Jan 1917, 3:14 am GMT+9 | 26 hr 33 min | Yes |
| 2 | 10 Feb 1917, 7:24 pm GMT+9 | 11 Feb 1917, 9:05 pm GMT+9 | 25 hr 41 min | Yes |
| 3 | 12 Mar 1917, 10:51 am GMT+9 | 13 Mar 1917, 11:21 am GMT+9 | 24 hr 29 min | Yes |
| 4 | 10 Apr 1917, 9:49 pm GMT+8 | 11 Apr 1917, 9:06 pm GMT+8 | 23 hr 17 min | Yes |
| 5 | 10 May 1917, 6:52 am GMT+8 | 11 May 1917, 5:03 am GMT+8 | 22 hr 11 min | Yes |
| 6 | 8 Jun 1917, 1:53 pm GMT+8 | 9 Jun 1917, 11:13 am GMT+8 | 21 hr 20 min | Yes |
| 7 | 7 Jul 1917, 7:55 pm GMT+8 | 8 Jul 1917, 4:43 pm GMT+8 | 20 hr 49 min | Yes |
| 8 | 6 Aug 1917, 2:03 am GMT+8 | 6 Aug 1917, 10:48 pm GMT+8 | 20 hr 45 min | No |
| 9 | 4 Sept 1917, 9:32 am GMT+8 | 5 Sept 1917, 6:45 am GMT+8 | 21 hr 13 min | Yes |
| 10 | 3 Oct 1917, 7:31 pm GMT+8 | 4 Oct 1917, 5:45 pm GMT+8 | 22 hr 14 min | Yes |
| 11 | 2 Nov 1917, 8:52 am GMT+8 | 3 Nov 1917, 8:28 am GMT+8 | 23 hr 37 min | Yes |
| 12 | 2 Dec 1917, 1:43 am GMT+8 | 3 Dec 1917, 2:43 am GMT+8 | 25 hr 0 min | Yes |
| 13 | 31 Dec 1917, 9:10 pm GMT+8 | 1 Jan 1918, 11:13 pm GMT+8 | 26 hr 3 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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