Pratipada (प्रतिपदा) dates and timings in Perth for 1931
Verified astronomical start and end times for lunar day 1 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 | 19 Jan 1931, 2:35 am GMT+8 | 20 Jan 1931, 4:27 am GMT+8 | 25 hr 52 min | Yes |
| 2 | 17 Feb 1931, 9:10 pm GMT+8 | 18 Feb 1931, 11:46 pm GMT+8 | 26 hr 35 min | Yes |
| 3 | 19 Mar 1931, 3:50 pm GMT+8 | 20 Mar 1931, 6:21 pm GMT+8 | 26 hr 31 min | Yes |
| 4 | 18 Apr 1931, 8:59 am GMT+8 | 19 Apr 1931, 10:36 am GMT+8 | 25 hr 37 min | Yes |
| 5 | 17 May 1931, 11:27 pm GMT+8 | 18 May 1931, 11:40 pm GMT+8 | 24 hr 13 min | Yes |
| 6 | 16 Jun 1931, 11:01 am GMT+8 | 17 Jun 1931, 9:46 am GMT+8 | 22 hr 45 min | Yes |
| 7 | 15 Jul 1931, 8:19 pm GMT+8 | 16 Jul 1931, 5:51 pm GMT+8 | 21 hr 32 min | Yes |
| 8 | 14 Aug 1931, 4:26 am GMT+8 | 15 Aug 1931, 1:08 am GMT+8 | 20 hr 42 min | Yes |
| 9 | 12 Sept 1931, 12:26 pm GMT+8 | 13 Sept 1931, 8:43 am GMT+8 | 20 hr 18 min | Yes |
| 10 | 11 Oct 1931, 9:05 pm GMT+8 | 12 Oct 1931, 5:25 pm GMT+8 | 20 hr 20 min | Yes |
| 11 | 10 Nov 1931, 6:55 am GMT+8 | 11 Nov 1931, 3:45 am GMT+8 | 20 hr 50 min | Yes |
| 12 | 9 Dec 1931, 6:15 pm GMT+8 | 10 Dec 1931, 4:06 pm GMT+8 | 21 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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