Dwitiya (द्वितीया) dates and timings in Perth for 1973
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 | 20 Jan 1973, 2:57 am GMT+8 | 21 Jan 1973, 12:54 am GMT+8 | 21 hr 57 min | Yes |
| 2 | 18 Feb 1973, 4:48 pm GMT+8 | 19 Feb 1973, 4:02 pm GMT+8 | 23 hr 14 min | Yes |
| 3 | 20 Mar 1973, 7:37 am GMT+8 | 21 Mar 1973, 8:13 am GMT+8 | 24 hr 36 min | Yes |
| 4 | 18 Apr 1973, 11:12 pm GMT+8 | 20 Apr 1973, 1:00 am GMT+8 | 25 hr 49 min | Yes |
| 5 | 18 May 1973, 3:15 pm GMT+8 | 19 May 1973, 5:46 pm GMT+8 | 26 hr 30 min | Yes |
| 6 | 17 Jun 1973, 7:07 am GMT+8 | 18 Jun 1973, 9:33 am GMT+8 | 26 hr 26 min | Yes |
| 7 | 16 Jul 1973, 9:55 pm GMT+8 | 17 Jul 1973, 11:33 pm GMT+8 | 25 hr 38 min | Yes |
| 8 | 15 Aug 1973, 11:07 am GMT+8 | 16 Aug 1973, 11:29 am GMT+8 | 24 hr 22 min | Yes |
| 9 | 13 Sept 1973, 10:42 pm GMT+8 | 14 Sept 1973, 9:42 pm GMT+8 | 23 hr 0 min | Yes |
| 10 | 13 Oct 1973, 9:15 am GMT+8 | 14 Oct 1973, 7:04 am GMT+8 | 21 hr 49 min | Yes |
| 11 | 11 Nov 1973, 7:30 pm GMT+8 | 12 Nov 1973, 4:26 pm GMT+8 | 20 hr 56 min | Yes |
| 12 | 11 Dec 1973, 5:59 am GMT+8 | 12 Dec 1973, 2:25 am GMT+8 | 20 hr 26 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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