Trayodashi (त्रयोदशी) dates and timings in Kolkata for 2021
Verified astronomical start and end times for lunar day 13 in Kolkata, shown in Asia/Kolkata.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 26 Jan 2021, 12:25 am IST | 27 Jan 2021, 1:11 am IST | 24 hr 47 min | Yes |
| 2 | 24 Feb 2021, 6:06 pm IST | 25 Feb 2021, 5:19 pm IST | 23 hr 13 min | Yes |
| 3 | 26 Mar 2021, 8:21 am IST | 27 Mar 2021, 6:12 am IST | 21 hr 50 min | Yes |
| 4 | 24 Apr 2021, 7:17 pm IST | 25 Apr 2021, 4:13 pm IST | 20 hr 56 min | Yes |
| 5 | 24 May 2021, 3:39 am IST | 25 May 2021, 12:11 am IST | 20 hr 33 min | Yes |
| 6 | 22 Jun 2021, 10:22 am IST | 23 Jun 2021, 7:00 am IST | 20 hr 38 min | Yes |
| 7 | 21 Jul 2021, 4:26 pm IST | 22 Jul 2021, 1:33 pm IST | 21 hr 6 min | Yes |
| 8 | 19 Aug 2021, 10:54 pm IST | 20 Aug 2021, 8:50 pm IST | 21 hr 56 min | Yes |
| 9 | 18 Sept 2021, 6:54 am IST | 19 Sept 2021, 6:00 am IST | 23 hr 5 min | Yes |
| 10 | 17 Oct 2021, 5:39 pm IST | 18 Oct 2021, 6:07 pm IST | 24 hr 28 min | Yes |
| 11 | 16 Nov 2021, 8:02 am IST | 17 Nov 2021, 9:50 am IST | 25 hr 48 min | Yes |
| 12 | 16 Dec 2021, 2:02 am IST | 17 Dec 2021, 4:41 am IST | 26 hr 39 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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