Tritiya (तृतीया) dates and timings in London for 2025
Verified astronomical start and end times for lunar day 18 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 | 15 Jan 2025, 9:53 pm GMT | 16 Jan 2025, 10:36 pm GMT | 24 hr 43 min | Yes |
| 2 | 14 Feb 2025, 4:22 pm GMT | 15 Feb 2025, 6:22 pm GMT | 26 hr 0 min | Yes |
| 3 | 16 Mar 2025, 11:28 am GMT | 17 Mar 2025, 2:03 pm GMT | 26 hr 35 min | Yes |
| 4 | 15 Apr 2025, 6:26 am GMT+1 | 16 Apr 2025, 8:47 am GMT+1 | 26 hr 22 min | Yes |
| 5 | 14 May 2025, 9:59 pm GMT+1 | 15 May 2025, 11:33 pm GMT+1 | 25 hr 34 min | Yes |
| 6 | 13 Jun 2025, 10:49 am GMT+1 | 14 Jun 2025, 11:17 am GMT+1 | 24 hr 28 min | Yes |
| 7 | 12 Jul 2025, 9:16 pm GMT+1 | 13 Jul 2025, 8:33 pm GMT+1 | 23 hr 16 min | Yes |
| 8 | 11 Aug 2025, 6:04 am GMT+1 | 12 Aug 2025, 4:11 am GMT+1 | 22 hr 7 min | Yes |
| 9 | 9 Sept 2025, 1:59 pm GMT+1 | 10 Sept 2025, 11:08 am GMT+1 | 21 hr 9 min | Yes |
| 10 | 8 Oct 2025, 9:53 pm GMT+1 | 9 Oct 2025, 6:24 pm GMT+1 | 20 hr 32 min | Yes |
| 11 | 7 Nov 2025, 5:35 am GMT | 8 Nov 2025, 2:02 am GMT | 20 hr 27 min | Yes |
| 12 | 6 Dec 2025, 3:56 pm GMT | 7 Dec 2025, 12:55 pm GMT | 20 hr 59 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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