Dwitiya (द्वितीया) dates and timings in Adelaide for 1991
Verified astronomical start and end times for lunar day 17 in Adelaide, shown in Australia/Adelaide.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 2 Jan 1991, 1:37 am GMT+10:30 | 2 Jan 1991, 10:29 pm GMT+10:30 | 20 hr 53 min | No |
| 2 | 31 Jan 1991, 2:02 pm GMT+10:30 | 1 Feb 1991, 11:52 am GMT+10:30 | 21 hr 50 min | Yes |
| 3 | 2 Mar 1991, 3:27 am GMT+10:30 | 3 Mar 1991, 2:31 am GMT+10:30 | 23 hr 4 min | Yes |
| 4 | 31 Mar 1991, 4:41 pm GMT+9:30 | 1 Apr 1991, 5:07 pm GMT+9:30 | 24 hr 27 min | Yes |
| 5 | 30 Apr 1991, 7:41 am GMT+9:30 | 1 May 1991, 9:22 am GMT+9:30 | 25 hr 41 min | Yes |
| 6 | 29 May 1991, 11:19 pm GMT+9:30 | 31 May 1991, 1:46 am GMT+9:30 | 26 hr 27 min | Yes |
| 7 | 28 Jun 1991, 3:01 pm GMT+9:30 | 29 Jun 1991, 5:31 pm GMT+9:30 | 26 hr 29 min | Yes |
| 8 | 28 Jul 1991, 6:00 am GMT+9:30 | 29 Jul 1991, 7:46 am GMT+9:30 | 25 hr 46 min | Yes |
| 9 | 26 Aug 1991, 7:37 pm GMT+9:30 | 27 Aug 1991, 8:09 pm GMT+9:30 | 24 hr 32 min | Yes |
| 10 | 25 Sept 1991, 7:46 am GMT+9:30 | 26 Sept 1991, 6:56 am GMT+9:30 | 23 hr 10 min | Yes |
| 11 | 24 Oct 1991, 6:53 pm GMT+9:30 | 25 Oct 1991, 4:50 pm GMT+9:30 | 21 hr 57 min | Yes |
| 12 | 23 Nov 1991, 6:36 am GMT+10:30 | 24 Nov 1991, 3:37 am GMT+10:30 | 21 hr 1 min | Yes |
| 13 | 22 Dec 1991, 5:21 pm GMT+10:30 | 23 Dec 1991, 1:48 pm GMT+10:30 | 20 hr 27 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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