Dwadashi (द्वादशी) dates and timings in Perth for 1986
Verified astronomical start and end times for lunar day 12 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 | 22 Jan 1986, 3:24 am GMT+8 | 23 Jan 1986, 5:29 am GMT+8 | 26 hr 6 min | Yes |
| 2 | 20 Feb 1986, 11:25 pm GMT+8 | 22 Feb 1986, 12:18 am GMT+8 | 24 hr 52 min | Yes |
| 3 | 22 Mar 1986, 4:44 pm GMT+8 | 23 Mar 1986, 4:15 pm GMT+8 | 23 hr 31 min | Yes |
| 4 | 21 Apr 1986, 6:46 am GMT+8 | 22 Apr 1986, 5:07 am GMT+8 | 22 hr 21 min | Yes |
| 5 | 20 May 1986, 5:40 pm GMT+8 | 21 May 1986, 3:07 pm GMT+8 | 21 hr 27 min | Yes |
| 6 | 19 Jun 1986, 1:53 am GMT+8 | 19 Jun 1986, 10:47 pm GMT+8 | 20 hr 55 min | No |
| 7 | 18 Jul 1986, 8:12 am GMT+8 | 19 Jul 1986, 4:59 am GMT+8 | 20 hr 47 min | Yes |
| 8 | 16 Aug 1986, 1:44 pm GMT+8 | 17 Aug 1986, 10:51 am GMT+8 | 21 hr 7 min | Yes |
| 9 | 14 Sept 1986, 7:49 pm GMT+8 | 15 Sept 1986, 5:47 pm GMT+8 | 21 hr 58 min | Yes |
| 10 | 14 Oct 1986, 3:55 am GMT+8 | 15 Oct 1986, 3:07 am GMT+8 | 23 hr 12 min | Yes |
| 11 | 12 Nov 1986, 3:14 pm GMT+8 | 13 Nov 1986, 3:51 pm GMT+8 | 24 hr 37 min | Yes |
| 12 | 12 Dec 1986, 6:16 am GMT+8 | 13 Dec 1986, 8:06 am GMT+8 | 25 hr 50 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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