Pratipada (प्रतिपदा) dates and timings in Perth for 1981
Verified astronomical start and end times for lunar day 16 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 1981, 3:38 pm GMT+8 | 21 Jan 1981, 2:58 pm GMT+8 | 23 hr 20 min | Yes |
| 2 | 19 Feb 1981, 6:58 am GMT+8 | 20 Feb 1981, 7:44 am GMT+8 | 24 hr 47 min | Yes |
| 3 | 20 Mar 1981, 11:22 pm GMT+8 | 22 Mar 1981, 1:13 am GMT+8 | 25 hr 51 min | Yes |
| 4 | 19 Apr 1981, 3:58 pm GMT+8 | 20 Apr 1981, 6:21 pm GMT+8 | 26 hr 22 min | Yes |
| 5 | 19 May 1981, 8:03 am GMT+8 | 20 May 1981, 10:20 am GMT+8 | 26 hr 17 min | Yes |
| 6 | 17 Jun 1981, 11:04 pm GMT+8 | 19 Jun 1981, 12:39 am GMT+8 | 25 hr 35 min | Yes |
| 7 | 17 Jul 1981, 12:38 pm GMT+8 | 18 Jul 1981, 1:03 pm GMT+8 | 24 hr 25 min | Yes |
| 8 | 16 Aug 1981, 12:36 am GMT+8 | 16 Aug 1981, 11:35 pm GMT+8 | 22 hr 59 min | No |
| 9 | 14 Sept 1981, 11:08 am GMT+8 | 15 Sept 1981, 8:45 am GMT+8 | 21 hr 37 min | Yes |
| 10 | 13 Oct 1981, 8:49 pm GMT+8 | 14 Oct 1981, 5:25 pm GMT+8 | 20 hr 36 min | Yes |
| 11 | 12 Nov 1981, 6:26 am GMT+8 | 13 Nov 1981, 2:35 am GMT+8 | 20 hr 9 min | Yes |
| 12 | 11 Dec 1981, 4:41 pm GMT+8 | 12 Dec 1981, 12:58 pm GMT+8 | 20 hr 17 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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