Chaturthi (चतुर्थी) dates and timings in Adelaide for 1991
Verified astronomical start and end times for lunar day 4 in Adelaide, shown in Australia/Adelaide.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 19 Jan 1991, 2:34 pm GMT+10:30 | 20 Jan 1991, 3:05 pm GMT+10:30 | 24 hr 31 min | Yes |
| 2 | 18 Feb 1991, 3:51 am GMT+10:30 | 19 Feb 1991, 2:57 am GMT+10:30 | 23 hr 6 min | Yes |
| 3 | 19 Mar 1991, 1:03 pm GMT+9:30 | 20 Mar 1991, 10:59 am GMT+9:30 | 21 hr 56 min | Yes |
| 4 | 17 Apr 1991, 9:03 pm GMT+9:30 | 18 Apr 1991, 6:15 pm GMT+9:30 | 21 hr 12 min | Yes |
| 5 | 17 May 1991, 3:58 am GMT+9:30 | 18 May 1991, 12:52 am GMT+9:30 | 20 hr 54 min | Yes |
| 6 | 15 Jun 1991, 10:49 am GMT+9:30 | 16 Jun 1991, 7:49 am GMT+9:30 | 21 hr 0 min | Yes |
| 7 | 14 Jul 1991, 6:27 pm GMT+9:30 | 15 Jul 1991, 3:56 pm GMT+9:30 | 21 hr 29 min | Yes |
| 8 | 13 Aug 1991, 3:42 am GMT+9:30 | 14 Aug 1991, 2:04 am GMT+9:30 | 22 hr 22 min | Yes |
| 9 | 11 Sept 1991, 3:22 pm GMT+9:30 | 12 Sept 1991, 2:59 pm GMT+9:30 | 23 hr 37 min | Yes |
| 10 | 11 Oct 1991, 6:10 am GMT+9:30 | 12 Oct 1991, 7:12 am GMT+9:30 | 25 hr 2 min | Yes |
| 11 | 10 Nov 1991, 1:11 am GMT+10:30 | 11 Nov 1991, 3:25 am GMT+10:30 | 26 hr 14 min | Yes |
| 12 | 9 Dec 1991, 9:24 pm GMT+10:30 | 11 Dec 1991, 12:09 am GMT+10:30 | 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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