Trayodashi (त्रयोदशी) dates and timings in London for 2031
Verified astronomical start and end times for lunar day 28 in London, shown in Europe/London.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 20 Jan 2031, 2:46 pm GMT | 21 Jan 2031, 11:25 am GMT | 20 hr 40 min | Yes |
| 2 | 19 Feb 2031, 12:08 am GMT | 19 Feb 2031, 9:15 pm GMT | 21 hr 6 min | No |
| 3 | 20 Mar 2031, 8:50 am GMT | 21 Mar 2031, 6:50 am GMT | 22 hr 0 min | Yes |
| 4 | 18 Apr 2031, 6:46 pm GMT+1 | 19 Apr 2031, 6:02 pm GMT+1 | 23 hr 16 min | Yes |
| 5 | 18 May 2031, 4:59 am GMT+1 | 19 May 2031, 5:38 am GMT+1 | 24 hr 39 min | Yes |
| 6 | 16 Jun 2031, 5:06 pm GMT+1 | 17 Jun 2031, 6:56 pm GMT+1 | 25 hr 49 min | Yes |
| 7 | 16 Jul 2031, 7:15 am GMT+1 | 17 Jul 2031, 9:42 am GMT+1 | 26 hr 28 min | Yes |
| 8 | 14 Aug 2031, 11:00 pm GMT+1 | 16 Aug 2031, 1:26 am GMT+1 | 26 hr 25 min | Yes |
| 9 | 13 Sept 2031, 3:45 pm GMT+1 | 14 Sept 2031, 5:32 pm GMT+1 | 25 hr 47 min | Yes |
| 10 | 13 Oct 2031, 8:52 am GMT+1 | 14 Oct 2031, 9:35 am GMT+1 | 24 hr 43 min | Yes |
| 11 | 12 Nov 2031, 12:40 am GMT | 13 Nov 2031, 12:06 am GMT | 23 hr 26 min | Yes |
| 12 | 11 Dec 2031, 4:23 pm GMT | 12 Dec 2031, 2:31 pm GMT | 22 hr 8 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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