Chaturthi (चतुर्थी) dates and timings in Perth for 2021
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 | 16 Jan 2021, 10:16 am GMT+8 | 17 Jan 2021, 10:38 am GMT+8 | 24 hr 23 min | Yes |
| 2 | 15 Feb 2021, 4:29 am GMT+8 | 16 Feb 2021, 6:07 am GMT+8 | 25 hr 38 min | Yes |
| 3 | 16 Mar 2021, 11:29 pm GMT+8 | 18 Mar 2021, 1:59 am GMT+8 | 26 hr 30 min | Yes |
| 4 | 15 Apr 2021, 5:57 pm GMT+8 | 16 Apr 2021, 8:36 pm GMT+8 | 26 hr 39 min | Yes |
| 5 | 15 May 2021, 10:30 am GMT+8 | 16 May 2021, 12:31 pm GMT+8 | 26 hr 1 min | Yes |
| 6 | 14 Jun 2021, 12:10 am GMT+8 | 15 Jun 2021, 1:04 am GMT+8 | 24 hr 54 min | Yes |
| 7 | 13 Jul 2021, 10:54 am GMT+8 | 14 Jul 2021, 10:32 am GMT+8 | 23 hr 38 min | Yes |
| 8 | 11 Aug 2021, 7:24 pm GMT+8 | 12 Aug 2021, 5:55 pm GMT+8 | 22 hr 31 min | Yes |
| 9 | 10 Sept 2021, 2:48 am GMT+8 | 11 Sept 2021, 12:28 am GMT+8 | 21 hr 39 min | Yes |
| 10 | 9 Oct 2021, 10:19 am GMT+8 | 10 Oct 2021, 7:25 am GMT+8 | 21 hr 7 min | Yes |
| 11 | 7 Nov 2021, 6:52 pm GMT+8 | 8 Nov 2021, 3:47 pm GMT+8 | 20 hr 55 min | Yes |
| 12 | 7 Dec 2021, 5:02 am GMT+8 | 8 Dec 2021, 2:11 am GMT+8 | 21 hr 9 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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