Chaturthi (चतुर्थी) dates and timings in Perth for 1991
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 | 19 Jan 1991, 12:04 pm GMT+8 | 20 Jan 1991, 12:35 pm GMT+8 | 24 hr 31 min | Yes |
| 2 | 18 Feb 1991, 1:21 am GMT+8 | 19 Feb 1991, 12:27 am GMT+8 | 23 hr 6 min | Yes |
| 3 | 19 Mar 1991, 11:33 am GMT+8 | 20 Mar 1991, 9:29 am GMT+8 | 21 hr 56 min | Yes |
| 4 | 17 Apr 1991, 7:33 pm GMT+8 | 18 Apr 1991, 4:45 pm GMT+8 | 21 hr 12 min | Yes |
| 5 | 17 May 1991, 2:28 am GMT+8 | 17 May 1991, 11:22 pm GMT+8 | 20 hr 54 min | No |
| 6 | 15 Jun 1991, 9:19 am GMT+8 | 16 Jun 1991, 6:19 am GMT+8 | 21 hr 0 min | Yes |
| 7 | 14 Jul 1991, 4:57 pm GMT+8 | 15 Jul 1991, 2:26 pm GMT+8 | 21 hr 29 min | Yes |
| 8 | 13 Aug 1991, 2:12 am GMT+8 | 14 Aug 1991, 12:34 am GMT+8 | 22 hr 22 min | Yes |
| 9 | 11 Sept 1991, 1:52 pm GMT+8 | 12 Sept 1991, 1:29 pm GMT+8 | 23 hr 37 min | Yes |
| 10 | 11 Oct 1991, 4:40 am GMT+8 | 12 Oct 1991, 5:42 am GMT+8 | 25 hr 2 min | Yes |
| 11 | 9 Nov 1991, 10:41 pm GMT+8 | 11 Nov 1991, 12:55 am GMT+8 | 26 hr 14 min | Yes |
| 12 | 9 Dec 1991, 7:54 pm GMT+9 | 10 Dec 1991, 10:39 pm GMT+9 | 26 hr 46 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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