Trayodashi (त्रयोदशी) dates and timings in San Francisco for 2026
Verified astronomical start and end times for lunar day 28 in San Francisco, shown in America/Los_Angeles.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 15 Jan 2026, 6:47 am GMT-8 | 16 Jan 2026, 8:52 am GMT-8 | 26 hr 5 min | Yes |
| 2 | 14 Feb 2026, 2:32 am GMT-8 | 15 Feb 2026, 3:35 am GMT-8 | 25 hr 3 min | Yes |
| 3 | 15 Mar 2026, 9:11 pm GMT-7 | 16 Mar 2026, 8:53 pm GMT-7 | 23 hr 42 min | Yes |
| 4 | 14 Apr 2026, 11:42 am GMT-7 | 15 Apr 2026, 10:01 am GMT-7 | 22 hr 19 min | Yes |
| 5 | 13 May 2026, 10:51 pm GMT-7 | 14 May 2026, 8:01 pm GMT-7 | 21 hr 11 min | Yes |
| 6 | 12 Jun 2026, 7:07 am GMT-7 | 13 Jun 2026, 3:38 am GMT-7 | 20 hr 31 min | Yes |
| 7 | 11 Jul 2026, 1:34 pm GMT-7 | 12 Jul 2026, 10:00 am GMT-7 | 20 hr 26 min | Yes |
| 8 | 9 Aug 2026, 7:31 pm GMT-7 | 10 Aug 2026, 4:24 pm GMT-7 | 20 hr 53 min | Yes |
| 9 | 8 Sept 2026, 2:13 am GMT-7 | 9 Sept 2026, 12:01 am GMT-7 | 21 hr 48 min | Yes |
| 10 | 7 Oct 2026, 10:47 am GMT-7 | 8 Oct 2026, 9:46 am GMT-7 | 22 hr 59 min | Yes |
| 11 | 5 Nov 2026, 9:01 pm GMT-8 | 6 Nov 2026, 9:18 pm GMT-8 | 24 hr 17 min | Yes |
| 12 | 5 Dec 2026, 11:22 am GMT-8 | 6 Dec 2026, 12:52 pm GMT-8 | 25 hr 30 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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