Trayodashi (त्रयोदशी) dates and timings in London for 2033
Verified astronomical start and end times for lunar day 13 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 | 12 Jan 2033, 11:40 am GMT | 13 Jan 2033, 11:46 am GMT | 24 hr 6 min | Yes |
| 2 | 11 Feb 2033, 2:01 am GMT | 12 Feb 2033, 3:21 am GMT | 25 hr 19 min | Yes |
| 3 | 12 Mar 2033, 6:16 pm GMT | 13 Mar 2033, 8:32 pm GMT | 26 hr 16 min | Yes |
| 4 | 11 Apr 2033, 12:45 pm GMT+1 | 12 Apr 2033, 3:23 pm GMT+1 | 26 hr 37 min | Yes |
| 5 | 11 May 2033, 6:20 am GMT+1 | 12 May 2033, 8:33 am GMT+1 | 26 hr 13 min | Yes |
| 6 | 9 Jun 2033, 10:45 pm GMT+1 | 10 Jun 2033, 11:53 pm GMT+1 | 25 hr 8 min | Yes |
| 7 | 9 Jul 2033, 1:12 pm GMT+1 | 10 Jul 2033, 12:56 pm GMT+1 | 23 hr 44 min | Yes |
| 8 | 8 Aug 2033, 1:37 am GMT+1 | 9 Aug 2033, 12:01 am GMT+1 | 22 hr 23 min | Yes |
| 9 | 6 Sept 2033, 12:31 pm GMT+1 | 7 Sept 2033, 9:53 am GMT+1 | 21 hr 22 min | Yes |
| 10 | 5 Oct 2033, 10:32 pm GMT+1 | 6 Oct 2033, 7:18 pm GMT+1 | 20 hr 46 min | Yes |
| 11 | 4 Nov 2033, 7:09 am GMT | 5 Nov 2033, 3:45 am GMT | 20 hr 36 min | Yes |
| 12 | 3 Dec 2033, 4:38 pm GMT | 4 Dec 2033, 1:31 pm GMT | 20 hr 53 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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