Amavasya (अमावस्या) dates and timings in Perth for 1981
Verified astronomical start and end times for lunar day 30 in Perth, shown in Australia/Perth.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 5 Jan 1981, 3:05 pm GMT+8 | 6 Jan 1981, 3:24 pm GMT+8 | 24 hr 18 min | Yes |
| 2 | 4 Feb 1981, 7:23 am GMT+8 | 5 Feb 1981, 6:13 am GMT+8 | 22 hr 51 min | Yes |
| 3 | 5 Mar 1981, 9:02 pm GMT+8 | 6 Mar 1981, 6:31 pm GMT+8 | 21 hr 28 min | Yes |
| 4 | 4 Apr 1981, 7:50 am GMT+8 | 5 Apr 1981, 4:19 am GMT+8 | 20 hr 29 min | Yes |
| 5 | 3 May 1981, 4:15 pm GMT+8 | 4 May 1981, 12:19 pm GMT+8 | 20 hr 4 min | Yes |
| 6 | 1 Jun 1981, 11:15 pm GMT+8 | 2 Jun 1981, 7:31 pm GMT+8 | 20 hr 16 min | Yes |
| 7 | 1 Jul 1981, 6:03 am GMT+8 | 2 Jul 1981, 3:03 am GMT+8 | 21 hr 0 min | Yes |
| 8 | 30 Jul 1981, 1:44 pm GMT+8 | 31 Jul 1981, 11:51 am GMT+8 | 22 hr 7 min | Yes |
| 9 | 28 Aug 1981, 11:17 pm GMT+8 | 29 Aug 1981, 10:43 pm GMT+8 | 23 hr 26 min | Yes |
| 10 | 27 Sept 1981, 11:22 am GMT+8 | 28 Sept 1981, 12:07 pm GMT+8 | 24 hr 45 min | Yes |
| 11 | 27 Oct 1981, 2:20 am GMT+8 | 28 Oct 1981, 4:13 am GMT+8 | 25 hr 53 min | Yes |
| 12 | 25 Nov 1981, 8:04 pm GMT+8 | 26 Nov 1981, 10:38 pm GMT+8 | 26 hr 34 min | Yes |
| 13 | 25 Dec 1981, 3:40 pm GMT+8 | 26 Dec 1981, 6:10 pm GMT+8 | 26 hr 30 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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