Dwitiya (द्वितीया) dates and timings in Perth for 1971
Verified astronomical start and end times for lunar day 17 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 | 12 Jan 1971, 10:43 pm GMT+8 | 14 Jan 1971, 12:35 am GMT+8 | 25 hr 52 min | Yes |
| 2 | 11 Feb 1971, 6:06 pm GMT+8 | 12 Feb 1971, 8:43 pm GMT+8 | 26 hr 36 min | Yes |
| 3 | 13 Mar 1971, 1:09 pm GMT+8 | 14 Mar 1971, 3:36 pm GMT+8 | 26 hr 28 min | Yes |
| 4 | 12 Apr 1971, 6:07 am GMT+8 | 13 Apr 1971, 7:44 am GMT+8 | 25 hr 37 min | Yes |
| 5 | 11 May 1971, 8:13 pm GMT+8 | 12 May 1971, 8:38 pm GMT+8 | 24 hr 25 min | Yes |
| 6 | 10 Jun 1971, 7:35 am GMT+8 | 11 Jun 1971, 6:44 am GMT+8 | 23 hr 9 min | Yes |
| 7 | 9 Jul 1971, 4:53 pm GMT+8 | 10 Jul 1971, 2:50 pm GMT+8 | 21 hr 57 min | Yes |
| 8 | 8 Aug 1971, 12:53 am GMT+8 | 8 Aug 1971, 9:51 pm GMT+8 | 20 hr 58 min | No |
| 9 | 6 Sept 1971, 8:26 am GMT+8 | 7 Sept 1971, 4:45 am GMT+8 | 20 hr 20 min | Yes |
| 10 | 5 Oct 1971, 4:23 pm GMT+8 | 6 Oct 1971, 12:35 pm GMT+8 | 20 hr 12 min | Yes |
| 11 | 4 Nov 1971, 1:40 am GMT+8 | 4 Nov 1971, 10:21 pm GMT+8 | 20 hr 42 min | No |
| 12 | 3 Dec 1971, 1:03 pm GMT+8 | 4 Dec 1971, 10:49 am GMT+8 | 21 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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