Pratipada (प्रतिपदा) dates and timings in Perth for 1991
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 | 16 Jan 1991, 7:49 am GMT+8 | 17 Jan 1991, 9:39 am GMT+8 | 25 hr 50 min | Yes |
| 2 | 15 Feb 1991, 1:31 am GMT+8 | 16 Feb 1991, 1:57 am GMT+8 | 24 hr 25 min | Yes |
| 3 | 16 Mar 1991, 4:10 pm GMT+8 | 17 Mar 1991, 3:00 pm GMT+8 | 22 hr 50 min | Yes |
| 4 | 15 Apr 1991, 3:37 am GMT+8 | 16 Apr 1991, 1:07 am GMT+8 | 21 hr 30 min | Yes |
| 5 | 14 May 1991, 12:35 pm GMT+8 | 15 May 1991, 9:14 am GMT+8 | 20 hr 38 min | Yes |
| 6 | 12 Jun 1991, 8:05 pm GMT+8 | 13 Jun 1991, 4:21 pm GMT+8 | 20 hr 16 min | Yes |
| 7 | 12 Jul 1991, 3:06 am GMT+8 | 12 Jul 1991, 11:26 pm GMT+8 | 20 hr 20 min | No |
| 8 | 10 Aug 1991, 10:27 am GMT+8 | 11 Aug 1991, 7:17 am GMT+8 | 20 hr 50 min | Yes |
| 9 | 8 Sept 1991, 7:00 pm GMT+8 | 9 Sept 1991, 4:45 pm GMT+8 | 21 hr 45 min | Yes |
| 10 | 8 Oct 1991, 5:38 am GMT+8 | 9 Oct 1991, 4:42 am GMT+8 | 23 hr 4 min | Yes |
| 11 | 6 Nov 1991, 7:11 pm GMT+8 | 7 Nov 1991, 7:46 pm GMT+8 | 24 hr 36 min | Yes |
| 12 | 6 Dec 1991, 12:56 pm GMT+9 | 7 Dec 1991, 2:55 pm GMT+9 | 25 hr 59 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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