Chaturthi (चतुर्थी) dates and timings in Perth for 1973
Verified astronomical start and end times for lunar day 19 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 | 21 Jan 1973, 11:27 pm GMT+8 | 22 Jan 1973, 10:43 pm GMT+8 | 23 hr 15 min | Yes |
| 2 | 20 Feb 1973, 3:53 pm GMT+8 | 21 Feb 1973, 4:26 pm GMT+8 | 24 hr 33 min | Yes |
| 3 | 22 Mar 1973, 9:23 am GMT+8 | 23 Mar 1973, 11:08 am GMT+8 | 25 hr 44 min | Yes |
| 4 | 21 Apr 1973, 3:13 am GMT+8 | 22 Apr 1973, 5:43 am GMT+8 | 26 hr 30 min | Yes |
| 5 | 20 May 1973, 8:21 pm GMT+8 | 21 May 1973, 10:54 pm GMT+8 | 26 hr 32 min | Yes |
| 6 | 19 Jun 1973, 11:46 am GMT+8 | 20 Jun 1973, 1:38 pm GMT+8 | 25 hr 52 min | Yes |
| 7 | 19 Jul 1973, 12:46 am GMT+8 | 20 Jul 1973, 1:30 am GMT+8 | 24 hr 44 min | Yes |
| 8 | 17 Aug 1973, 11:24 am GMT+8 | 18 Aug 1973, 10:55 am GMT+8 | 23 hr 31 min | Yes |
| 9 | 15 Sept 1973, 8:23 pm GMT+8 | 16 Sept 1973, 6:48 pm GMT+8 | 22 hr 25 min | Yes |
| 10 | 15 Oct 1973, 4:42 am GMT+8 | 16 Oct 1973, 2:18 am GMT+8 | 21 hr 36 min | Yes |
| 11 | 13 Nov 1973, 1:22 pm GMT+8 | 14 Nov 1973, 10:26 am GMT+8 | 21 hr 4 min | Yes |
| 12 | 12 Dec 1973, 11:01 pm GMT+8 | 13 Dec 1973, 7:55 pm GMT+8 | 20 hr 54 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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