Amavasya (अमावस्या) dates and timings in Perth for 1990
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 | 26 Jan 1990, 3:40 am GMT+8 | 27 Jan 1990, 3:20 am GMT+8 | 23 hr 39 min | Yes |
| 2 | 24 Feb 1990, 6:42 pm GMT+8 | 25 Feb 1990, 4:54 pm GMT+8 | 22 hr 11 min | Yes |
| 3 | 26 Mar 1990, 6:50 am GMT+8 | 27 Mar 1990, 3:48 am GMT+8 | 20 hr 58 min | Yes |
| 4 | 24 Apr 1990, 4:14 pm GMT+8 | 25 Apr 1990, 12:27 pm GMT+8 | 20 hr 13 min | Yes |
| 5 | 23 May 1990, 11:42 pm GMT+8 | 24 May 1990, 7:47 pm GMT+8 | 20 hr 5 min | Yes |
| 6 | 22 Jun 1990, 6:22 am GMT+8 | 23 Jun 1990, 2:54 am GMT+8 | 20 hr 32 min | Yes |
| 7 | 21 Jul 1990, 1:26 pm GMT+8 | 22 Jul 1990, 10:54 am GMT+8 | 21 hr 28 min | Yes |
| 8 | 19 Aug 1990, 9:57 pm GMT+8 | 20 Aug 1990, 8:39 pm GMT+8 | 22 hr 41 min | Yes |
| 9 | 18 Sept 1990, 8:44 am GMT+8 | 19 Sept 1990, 8:46 am GMT+8 | 24 hr 2 min | Yes |
| 10 | 17 Oct 1990, 10:18 pm GMT+8 | 18 Oct 1990, 11:36 pm GMT+8 | 25 hr 18 min | Yes |
| 11 | 16 Nov 1990, 2:48 pm GMT+8 | 17 Nov 1990, 5:04 pm GMT+8 | 26 hr 16 min | Yes |
| 12 | 16 Dec 1990, 9:42 am GMT+8 | 17 Dec 1990, 12:21 pm GMT+8 | 26 hr 39 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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