| Astronomical Times for Chamberlain Observatory (39.002455, -90.163180) Starting 14 May 2026, for the next 5 days | |||||||
| Date | Morning | Sunrise | Sunset | Evening | Moonrise | Moonset | Moon Phase |
| Twilight | Twilight | ||||||
| 14 May 2026 | 04:15 | 05:46 | 20:07 | 21:36 | 04:03 | 17:55 |  |
| 15 May 2026 | 04:15 | 05:46 | 20:08 | 21:37 | 04:34 | 19:13 | |
| 16 May 2026 | 04:14 | 05:45 | 20:08 | 21:37 | 05:11 | 20:33 | |
| 17 May 2026 | 04:13 | 05:44 | 20:09 | 21:38 | 05:57 | 21:51 |  |
| 18 May 2026 | 04:12 | 05:43 | 20:10 | 21:39 | 06:55 | 23:00 | |
| Planetary Data for today | ||||||||||
 |  |  |  |  |  |  |  | |||
| Mercury | Venus | Mars | Jupiter | Saturn | Uranus | Neptune | Pluto | |||
| Rises | 05:51 | 07:38 | 04:40 | 09:43 | 04:07 | 06:17 | 03:46 | 01:27 | ||
| Meridian | 12:56 | 15:07 | 11:10 | 17:00 | 10:12 | 13:25 | 09:45 | 06:06 | ||
| Sets | 19:55 | 22:33 | 17:41 | 00:19 | 16:18 | 20:37 | 15:45 | 10:45 | ||
| Constellation | Aries | Taurus | Pisces | Gemini | Cetus | Taurus | Pisces | Capricornus | ||
| Visible ISS Passes | ||||||||||
 | ||||||||||
| Date | Brightness | Start | Highest point | End | ||||||
| (mag) | Time | Alt. | Az. | Time | Alt. | Az. | Time | Alt. | Az. | |
| 13 May | -0.8 | 20:55:17 | 10° | WNW | 20:57:44 | 18° | NNW | 21:00:09 | 10° | NNE |
| 14 May | -0.3 | 00:11:35 | 10° | NNW | 00:12:04 | 12° | N | 00:12:04 | 12° | N |
| 14 May | -0.4 | 21:47:02 | 10° | NNW | 21:47:37 | 10° | N | 21:48:11 | 10° | N |
| 14 May | -0.6 | 23:24:16 | 10° | N | 23:25:38 | 12° | NNE | 23:25:59 | 12° | NNE |
| 15 May | -0.6 | 20:58:18 | 10° | NW | 20:59:39 | 12° | NNW | 21:00:59 | 10° | N |
| 15 May | -0.5 | 22:37:03 | 10° | N | 22:37:40 | 10° | N | 22:38:18 | 10° | NNE |
| 16 May | -0.3 | 00:12:31 | 10° | NNW | 00:12:49 | 12° | NNW | 00:12:49 | 12° | NNW |
| 16 May | -1.0 | 23:25:04 | 10° | NNW | 23:26:43 | 17° | N | 23:26:43 | 17° | N |
| 17 May | -1.1 | 22:37:39 | 10° | NNW | 22:39:36 | 15° | NNE | 22:40:37 | 13° | NE |