Amavasya (अमावस्या) dates and timings in Perth for 1980
Verified astronomical start and end times for lunar day 30 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 | 17 Jan 1980, 7:44 am GMT+8 | 18 Jan 1980, 5:19 am GMT+8 | 21 hr 35 min | Yes |
| 2 | 15 Feb 1980, 8:09 pm GMT+8 | 16 Feb 1980, 4:50 pm GMT+8 | 20 hr 42 min | Yes |
| 3 | 16 Mar 1980, 6:41 am GMT+8 | 17 Mar 1980, 2:55 am GMT+8 | 20 hr 15 min | Yes |
| 4 | 14 Apr 1980, 3:29 pm GMT+8 | 15 Apr 1980, 11:46 am GMT+8 | 20 hr 17 min | Yes |
| 5 | 13 May 1980, 11:08 pm GMT+8 | 14 May 1980, 8:00 pm GMT+8 | 20 hr 52 min | Yes |
| 6 | 12 Jun 1980, 6:42 am GMT+8 | 13 Jun 1980, 4:38 am GMT+8 | 21 hr 56 min | Yes |
| 7 | 11 Jul 1980, 3:25 pm GMT+8 | 12 Jul 1980, 2:45 pm GMT+8 | 23 hr 20 min | Yes |
| 8 | 10 Aug 1980, 2:21 am GMT+8 | 11 Aug 1980, 3:09 am GMT+8 | 24 hr 48 min | Yes |
| 9 | 8 Sept 1980, 4:02 pm GMT+8 | 9 Sept 1980, 6:00 pm GMT+8 | 25 hr 57 min | Yes |
| 10 | 8 Oct 1980, 8:19 am GMT+8 | 9 Oct 1980, 10:49 am GMT+8 | 26 hr 30 min | Yes |
| 11 | 7 Nov 1980, 2:21 am GMT+8 | 8 Nov 1980, 4:42 am GMT+8 | 26 hr 21 min | Yes |
| 12 | 6 Dec 1980, 9:01 pm GMT+8 | 7 Dec 1980, 10:35 pm GMT+8 | 25 hr 33 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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