Dwitiya (द्वितीया) dates and timings in Perth for 1977
Verified astronomical start and end times for lunar day 17 in Perth, shown in Australia/Perth.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 6 Jan 1977, 8:47 pm GMT+8 | 7 Jan 1977, 8:58 pm GMT+8 | 24 hr 11 min | Yes |
| 2 | 5 Feb 1977, 11:06 am GMT+8 | 6 Feb 1977, 9:54 am GMT+8 | 22 hr 48 min | Yes |
| 3 | 6 Mar 1977, 11:05 pm GMT+8 | 7 Mar 1977, 8:42 pm GMT+8 | 21 hr 37 min | Yes |
| 4 | 5 Apr 1977, 9:01 am GMT+8 | 6 Apr 1977, 5:46 am GMT+8 | 20 hr 45 min | Yes |
| 5 | 4 May 1977, 5:19 pm GMT+8 | 5 May 1977, 1:36 pm GMT+8 | 20 hr 17 min | Yes |
| 6 | 3 Jun 1977, 12:39 am GMT+8 | 3 Jun 1977, 8:58 pm GMT+8 | 20 hr 20 min | No |
| 7 | 2 Jul 1977, 7:56 am GMT+8 | 3 Jul 1977, 4:51 am GMT+8 | 20 hr 55 min | Yes |
| 8 | 31 Jul 1977, 4:21 pm GMT+8 | 1 Aug 1977, 2:23 pm GMT+8 | 22 hr 2 min | Yes |
| 9 | 30 Aug 1977, 3:01 am GMT+8 | 31 Aug 1977, 2:29 am GMT+8 | 23 hr 28 min | Yes |
| 10 | 28 Sept 1977, 4:40 pm GMT+8 | 29 Sept 1977, 5:36 pm GMT+8 | 24 hr 56 min | Yes |
| 11 | 28 Oct 1977, 9:16 am GMT+8 | 29 Oct 1977, 11:19 am GMT+8 | 26 hr 2 min | Yes |
| 12 | 27 Nov 1977, 3:56 am GMT+8 | 28 Nov 1977, 6:28 am GMT+8 | 26 hr 32 min | Yes |
| 13 | 26 Dec 1977, 11:16 pm GMT+8 | 28 Dec 1977, 1:35 am GMT+8 | 26 hr 19 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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