Trayodashi (त्रयोदशी) dates and timings in Chicago for 2028
Verified astronomical start and end times for lunar day 13 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 | 9 Jan 2028, 6:26 am GMT-6 | 10 Jan 2028, 4:06 am GMT-6 | 21 hr 40 min | Yes |
| 2 | 7 Feb 2028, 7:22 pm GMT-6 | 8 Feb 2028, 4:16 pm GMT-6 | 20 hr 55 min | Yes |
| 3 | 8 Mar 2028, 5:57 am GMT-6 | 9 Mar 2028, 2:32 am GMT-6 | 20 hr 34 min | Yes |
| 4 | 6 Apr 2028, 3:22 pm GMT-5 | 7 Apr 2028, 12:03 pm GMT-5 | 20 hr 41 min | Yes |
| 5 | 5 May 2028, 10:18 pm GMT-5 | 6 May 2028, 7:36 pm GMT-5 | 21 hr 17 min | Yes |
| 6 | 4 Jun 2028, 4:59 am GMT-5 | 5 Jun 2028, 3:19 am GMT-5 | 22 hr 19 min | Yes |
| 7 | 3 Jul 2028, 12:47 pm GMT-5 | 4 Jul 2028, 12:27 pm GMT-5 | 23 hr 39 min | Yes |
| 8 | 1 Aug 2028, 10:54 pm GMT-5 | 2 Aug 2028, 11:55 pm GMT-5 | 25 hr 1 min | Yes |
| 9 | 31 Aug 2028, 12:01 pm GMT-5 | 1 Sept 2028, 2:05 pm GMT-5 | 26 hr 4 min | Yes |
| 10 | 30 Sept 2028, 4:04 am GMT-5 | 1 Oct 2028, 6:35 am GMT-5 | 26 hr 31 min | Yes |
| 11 | 29 Oct 2028, 10:21 pm GMT-5 | 31 Oct 2028, 12:39 am GMT-5 | 26 hr 17 min | Yes |
| 12 | 28 Nov 2028, 4:44 pm GMT-6 | 29 Nov 2028, 6:12 pm GMT-6 | 25 hr 28 min | Yes |
| 13 | 28 Dec 2028, 11:51 am GMT-6 | 29 Dec 2028, 12:07 pm GMT-6 | 24 hr 15 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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