Chaturthi (चतुर्थी) dates and timings in Sydney for 1980
Verified astronomical start and end times for lunar day 4 in Sydney, shown in Australia/Sydney.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 20 Jan 1980, 11:43 pm GMT+11 | 21 Jan 1980, 8:52 pm GMT+11 | 21 hr 9 min | Yes |
| 2 | 19 Feb 1980, 9:25 am GMT+11 | 20 Feb 1980, 6:17 am GMT+11 | 20 hr 52 min | Yes |
| 3 | 19 Mar 1980, 6:05 pm GMT+10 | 20 Mar 1980, 3:11 pm GMT+10 | 21 hr 6 min | Yes |
| 4 | 18 Apr 1980, 4:07 am GMT+10 | 19 Apr 1980, 1:59 am GMT+10 | 21 hr 52 min | Yes |
| 5 | 17 May 1980, 3:08 pm GMT+10 | 18 May 1980, 2:12 pm GMT+10 | 23 hr 4 min | Yes |
| 6 | 16 Jun 1980, 3:45 am GMT+10 | 17 Jun 1980, 4:11 am GMT+10 | 24 hr 26 min | Yes |
| 7 | 15 Jul 1980, 6:11 pm GMT+10 | 16 Jul 1980, 7:49 pm GMT+10 | 25 hr 38 min | Yes |
| 8 | 14 Aug 1980, 10:13 am GMT+10 | 15 Aug 1980, 12:34 pm GMT+10 | 26 hr 21 min | Yes |
| 9 | 13 Sept 1980, 3:08 am GMT+10 | 14 Sept 1980, 5:37 am GMT+10 | 26 hr 29 min | Yes |
| 10 | 12 Oct 1980, 8:05 pm GMT+10 | 13 Oct 1980, 10:09 pm GMT+10 | 26 hr 4 min | Yes |
| 11 | 11 Nov 1980, 1:16 pm GMT+11 | 12 Nov 1980, 2:28 pm GMT+11 | 25 hr 12 min | Yes |
| 12 | 11 Dec 1980, 3:58 am GMT+11 | 12 Dec 1980, 3:59 am GMT+11 | 24 hr 2 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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