Trayodashi (त्रयोदशी) dates and timings in Chicago for 2021
Verified astronomical start and end times for lunar day 28 in Chicago, shown in America/Chicago.
13 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 10 Jan 2021, 5:23 am GMT-6 | 11 Jan 2021, 3:02 am GMT-6 | 21 hr 40 min | Yes |
| 2 | 8 Feb 2021, 3:50 pm GMT-6 | 9 Feb 2021, 2:35 pm GMT-6 | 22 hr 46 min | Yes |
| 3 | 10 Mar 2021, 3:10 am GMT-6 | 11 Mar 2021, 3:10 am GMT-6 | 24 hr 0 min | Yes |
| 4 | 8 Apr 2021, 4:46 pm GMT-5 | 9 Apr 2021, 5:58 pm GMT-5 | 25 hr 12 min | Yes |
| 5 | 8 May 2021, 6:51 am GMT-5 | 9 May 2021, 9:01 am GMT-5 | 26 hr 10 min | Yes |
| 6 | 6 Jun 2021, 10:18 pm GMT-5 | 8 Jun 2021, 12:54 am GMT-5 | 26 hr 36 min | Yes |
| 7 | 6 Jul 2021, 2:32 pm GMT-5 | 7 Jul 2021, 4:50 pm GMT-5 | 26 hr 18 min | Yes |
| 8 | 5 Aug 2021, 6:39 am GMT-5 | 6 Aug 2021, 7:58 am GMT-5 | 25 hr 19 min | Yes |
| 9 | 3 Sept 2021, 9:54 pm GMT-5 | 4 Sept 2021, 9:51 pm GMT-5 | 23 hr 57 min | Yes |
| 10 | 3 Oct 2021, 12:00 pm GMT-5 | 4 Oct 2021, 10:35 am GMT-5 | 22 hr 36 min | Yes |
| 11 | 2 Nov 2021, 1:01 am GMT-5 | 2 Nov 2021, 10:32 pm GMT-5 | 21 hr 31 min | No |
| 12 | 1 Dec 2021, 12:05 pm GMT-6 | 2 Dec 2021, 8:56 am GMT-6 | 20 hr 51 min | Yes |
| 13 | 30 Dec 2021, 11:10 pm GMT-6 | 31 Dec 2021, 7:47 pm GMT-6 | 20 hr 37 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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