Trayodashi (त्रयोदशी) dates and timings in Chicago for 2030
Verified astronomical start and end times for lunar day 13 in Chicago, shown in America/Chicago.
12 occurrences found. Each end time is exclusive: the next Tithi begins at that instant.
| # | Starts | Ends | Duration | Crosses midnight |
|---|---|---|---|---|
| 1 | 16 Jan 2030, 7:03 am GMT-6 | 17 Jan 2030, 8:35 am GMT-6 | 25 hr 32 min | Yes |
| 2 | 15 Feb 2030, 2:08 am GMT-6 | 16 Feb 2030, 2:13 am GMT-6 | 24 hr 4 min | Yes |
| 3 | 16 Mar 2030, 7:06 pm GMT-5 | 17 Mar 2030, 5:39 pm GMT-5 | 22 hr 33 min | Yes |
| 4 | 15 Apr 2030, 7:34 am GMT-5 | 16 Apr 2030, 4:56 am GMT-5 | 21 hr 22 min | Yes |
| 5 | 14 May 2030, 5:02 pm GMT-5 | 15 May 2030, 1:44 pm GMT-5 | 20 hr 42 min | Yes |
| 6 | 13 Jun 2030, 12:26 am GMT-5 | 13 Jun 2030, 8:58 pm GMT-5 | 20 hr 32 min | No |
| 7 | 12 Jul 2030, 6:43 am GMT-5 | 13 Jul 2030, 3:31 am GMT-5 | 20 hr 47 min | Yes |
| 8 | 10 Aug 2030, 12:54 pm GMT-5 | 11 Aug 2030, 10:19 am GMT-5 | 21 hr 26 min | Yes |
| 9 | 8 Sept 2030, 8:02 pm GMT-5 | 9 Sept 2030, 6:27 pm GMT-5 | 22 hr 25 min | Yes |
| 10 | 8 Oct 2030, 5:20 am GMT-5 | 9 Oct 2030, 5:02 am GMT-5 | 23 hr 42 min | Yes |
| 11 | 6 Nov 2030, 4:52 pm GMT-6 | 7 Nov 2030, 5:59 pm GMT-6 | 25 hr 7 min | Yes |
| 12 | 6 Dec 2030, 9:10 am GMT-6 | 7 Dec 2030, 11:27 am GMT-6 | 26 hr 17 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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