Chaturthi (चतुर्थी) dates and timings in San Francisco for 2026
Verified astronomical start and end times for lunar day 19 in San Francisco, shown in America/Los_Angeles.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 5 Jan 2026, 6:32 pm GMT-8 | 6 Jan 2026, 5:23 pm GMT-8 | 22 hr 51 min | Yes |
| 2 | 4 Feb 2026, 10:40 am GMT-8 | 5 Feb 2026, 10:52 am GMT-8 | 24 hr 13 min | Yes |
| 3 | 6 Mar 2026, 4:23 am GMT-8 | 7 Mar 2026, 5:47 am GMT-8 | 25 hr 24 min | Yes |
| 4 | 4 Apr 2026, 11:30 pm GMT-7 | 6 Apr 2026, 1:41 am GMT-7 | 26 hr 11 min | Yes |
| 5 | 4 May 2026, 4:54 pm GMT-7 | 5 May 2026, 7:21 pm GMT-7 | 26 hr 27 min | Yes |
| 6 | 3 Jun 2026, 8:51 am GMT-7 | 4 Jun 2026, 11:00 am GMT-7 | 26 hr 9 min | Yes |
| 7 | 2 Jul 2026, 10:50 pm GMT-7 | 4 Jul 2026, 12:10 am GMT-7 | 25 hr 20 min | Yes |
| 8 | 1 Aug 2026, 10:37 am GMT-7 | 2 Aug 2026, 10:45 am GMT-7 | 24 hr 8 min | Yes |
| 9 | 30 Aug 2026, 8:21 pm GMT-7 | 31 Aug 2026, 7:12 pm GMT-7 | 22 hr 51 min | Yes |
| 10 | 29 Sept 2026, 4:40 am GMT-7 | 30 Sept 2026, 2:25 am GMT-7 | 21 hr 45 min | Yes |
| 11 | 28 Oct 2026, 12:37 pm GMT-7 | 29 Oct 2026, 9:40 am GMT-7 | 21 hr 3 min | Yes |
| 12 | 26 Nov 2026, 8:19 pm GMT-8 | 27 Nov 2026, 5:10 pm GMT-8 | 20 hr 51 min | Yes |
| 13 | 26 Dec 2026, 6:35 am GMT-8 | 27 Dec 2026, 3:43 am GMT-8 | 21 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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