Chaturthi (चतुर्थी) dates and timings in Bangkok for 2021
Verified astronomical start and end times for lunar day 4 in Bangkok, shown in Asia/Bangkok.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 16 Jan 2021, 9:16 am GMT+7 | 17 Jan 2021, 9:38 am GMT+7 | 24 hr 23 min | Yes |
| 2 | 15 Feb 2021, 3:29 am GMT+7 | 16 Feb 2021, 5:07 am GMT+7 | 25 hr 38 min | Yes |
| 3 | 16 Mar 2021, 10:29 pm GMT+7 | 18 Mar 2021, 12:59 am GMT+7 | 26 hr 30 min | Yes |
| 4 | 15 Apr 2021, 4:57 pm GMT+7 | 16 Apr 2021, 7:36 pm GMT+7 | 26 hr 39 min | Yes |
| 5 | 15 May 2021, 9:30 am GMT+7 | 16 May 2021, 11:31 am GMT+7 | 26 hr 1 min | Yes |
| 6 | 13 Jun 2021, 11:10 pm GMT+7 | 15 Jun 2021, 12:04 am GMT+7 | 24 hr 54 min | Yes |
| 7 | 13 Jul 2021, 9:54 am GMT+7 | 14 Jul 2021, 9:32 am GMT+7 | 23 hr 38 min | Yes |
| 8 | 11 Aug 2021, 6:24 pm GMT+7 | 12 Aug 2021, 4:55 pm GMT+7 | 22 hr 31 min | Yes |
| 9 | 10 Sept 2021, 1:48 am GMT+7 | 10 Sept 2021, 11:28 pm GMT+7 | 21 hr 39 min | No |
| 10 | 9 Oct 2021, 9:19 am GMT+7 | 10 Oct 2021, 6:25 am GMT+7 | 21 hr 7 min | Yes |
| 11 | 7 Nov 2021, 5:52 pm GMT+7 | 8 Nov 2021, 2:47 pm GMT+7 | 20 hr 55 min | Yes |
| 12 | 7 Dec 2021, 4:02 am GMT+7 | 8 Dec 2021, 1:11 am GMT+7 | 21 hr 9 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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