Purnima (पूर्णिमा) dates and timings in Chicago for 2026
Verified astronomical start and end times for lunar day 15 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 | 2 Jan 2026, 7:23 am GMT-6 | 3 Jan 2026, 4:02 am GMT-6 | 20 hr 39 min | Yes |
| 2 | 31 Jan 2026, 6:23 pm GMT-6 | 1 Feb 2026, 4:09 pm GMT-6 | 21 hr 46 min | Yes |
| 3 | 2 Mar 2026, 6:26 am GMT-6 | 3 Mar 2026, 5:37 am GMT-6 | 23 hr 12 min | Yes |
| 4 | 31 Mar 2026, 8:36 pm GMT-5 | 1 Apr 2026, 9:12 pm GMT-5 | 24 hr 35 min | Yes |
| 5 | 30 Apr 2026, 10:43 am GMT-5 | 1 May 2026, 12:23 pm GMT-5 | 25 hr 40 min | Yes |
| 6 | 30 May 2026, 1:28 am GMT-5 | 31 May 2026, 3:45 am GMT-5 | 26 hr 17 min | Yes |
| 7 | 28 Jun 2026, 4:36 pm GMT-5 | 29 Jun 2026, 6:56 pm GMT-5 | 26 hr 20 min | Yes |
| 8 | 28 Jul 2026, 7:49 am GMT-5 | 29 Jul 2026, 9:35 am GMT-5 | 25 hr 46 min | Yes |
| 9 | 26 Aug 2026, 10:39 pm GMT-5 | 27 Aug 2026, 11:18 pm GMT-5 | 24 hr 39 min | Yes |
| 10 | 25 Sept 2026, 12:37 pm GMT-5 | 26 Sept 2026, 11:49 am GMT-5 | 23 hr 12 min | Yes |
| 11 | 25 Oct 2026, 1:26 am GMT-5 | 25 Oct 2026, 11:11 pm GMT-5 | 21 hr 45 min | No |
| 12 | 23 Nov 2026, 12:12 pm GMT-6 | 24 Nov 2026, 8:53 am GMT-6 | 20 hr 41 min | Yes |
| 13 | 22 Dec 2026, 11:17 pm GMT-6 | 23 Dec 2026, 7:28 pm GMT-6 | 20 hr 11 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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