Pratipada (प्रतिपदा) dates and timings in Perth for 1980
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 | 18 Jan 1980, 5:19 am GMT+8 | 19 Jan 1980, 2:34 am GMT+8 | 21 hr 15 min | Yes |
| 2 | 16 Feb 1980, 4:50 pm GMT+8 | 17 Feb 1980, 1:21 pm GMT+8 | 20 hr 30 min | Yes |
| 3 | 17 Mar 1980, 2:55 am GMT+8 | 17 Mar 1980, 11:07 pm GMT+8 | 20 hr 12 min | No |
| 4 | 15 Apr 1980, 11:46 am GMT+8 | 16 Apr 1980, 8:11 am GMT+8 | 20 hr 25 min | Yes |
| 5 | 14 May 1980, 8:00 pm GMT+8 | 15 May 1980, 5:10 pm GMT+8 | 21 hr 11 min | Yes |
| 6 | 13 Jun 1980, 4:38 am GMT+8 | 14 Jun 1980, 3:02 am GMT+8 | 22 hr 24 min | Yes |
| 7 | 12 Jul 1980, 2:45 pm GMT+8 | 13 Jul 1980, 2:38 pm GMT+8 | 23 hr 53 min | Yes |
| 8 | 11 Aug 1980, 3:09 am GMT+8 | 12 Aug 1980, 4:25 am GMT+8 | 25 hr 16 min | Yes |
| 9 | 9 Sept 1980, 6:00 pm GMT+8 | 10 Sept 1980, 8:13 pm GMT+8 | 26 hr 13 min | Yes |
| 10 | 9 Oct 1980, 10:49 am GMT+8 | 10 Oct 1980, 1:20 pm GMT+8 | 26 hr 31 min | Yes |
| 11 | 8 Nov 1980, 4:42 am GMT+8 | 9 Nov 1980, 6:50 am GMT+8 | 26 hr 8 min | Yes |
| 12 | 7 Dec 1980, 10:35 pm GMT+8 | 8 Dec 1980, 11:45 pm GMT+8 | 25 hr 10 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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