Chaturdashi (चतुर्दशी) dates and timings in Perth for 1991
Verified astronomical start and end times for lunar day 29 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 | 14 Jan 1991, 3:10 am GMT+8 | 15 Jan 1991, 5:38 am GMT+8 | 26 hr 28 min | Yes |
| 2 | 12 Feb 1991, 11:05 pm GMT+8 | 14 Feb 1991, 12:34 am GMT+8 | 25 hr 29 min | Yes |
| 3 | 14 Mar 1991, 4:49 pm GMT+8 | 15 Mar 1991, 4:48 pm GMT+8 | 23 hr 59 min | Yes |
| 4 | 13 Apr 1991, 7:15 am GMT+8 | 14 Apr 1991, 5:43 am GMT+8 | 22 hr 28 min | Yes |
| 5 | 12 May 1991, 6:27 pm GMT+8 | 13 May 1991, 3:43 pm GMT+8 | 21 hr 16 min | Yes |
| 6 | 11 Jun 1991, 3:12 am GMT+8 | 11 Jun 1991, 11:46 pm GMT+8 | 20 hr 34 min | No |
| 7 | 10 Jul 1991, 10:29 am GMT+8 | 11 Jul 1991, 6:50 am GMT+8 | 20 hr 21 min | Yes |
| 8 | 8 Aug 1991, 5:16 pm GMT+8 | 9 Aug 1991, 1:50 pm GMT+8 | 20 hr 34 min | Yes |
| 9 | 7 Sept 1991, 12:25 am GMT+8 | 7 Sept 1991, 9:36 pm GMT+8 | 21 hr 12 min | No |
| 10 | 6 Oct 1991, 8:50 am GMT+8 | 7 Oct 1991, 7:04 am GMT+8 | 22 hr 13 min | Yes |
| 11 | 4 Nov 1991, 7:31 pm GMT+8 | 5 Nov 1991, 7:07 pm GMT+8 | 23 hr 36 min | Yes |
| 12 | 4 Dec 1991, 10:17 am GMT+9 | 5 Dec 1991, 11:23 am GMT+9 | 25 hr 6 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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