A table listing some of the Astronomical Phenomena for April 2019:
| Day (UT) | Time (UT) | Event |
|---|---|---|
| 1 | 00:21 | Moon at apogee approx. 405,576 kilometres or 252,013 miles from the Earth. |
| 2 | 04:17 | Venus (mag. -3.9) 2.7 degrees north of Moon. |
| 2 | 18:40 | Neptune (mag. +8.0) 0.4 degrees south of Mercury (mag. +0.8). |
| 2 | 22:51 | Neptune (mag. +8.0) 3.3 degrees north of Moon. |
| 2 | 23:02 | Mercury (mag. +0.8) 3.6 degrees north of Moon. |
| 5 | 08:51 | New moon. |
| 6 | 16:48 | Asteroid Pallas (mag. +7.9) is at opposition in Boötes. |
| 8 | 20:44 | Ceres (mag. +8.0) begins retrograde motion. |
| 9 | 06:39 | Mars (mag. +1.5) 4.7 degrees north of Moon. |
| 9 | 16:12 | Moon 2.1 degrees north of Aldebaran (mag. +0.9). |
| 10 | 03:47 | Neptune (mag. +8.0) 0.3 degrees north of Venus (mag. -3.9). |
| 10 | 07:47 | Mercury (mag. +0.3) at aphelion 0.467 AU (approx. 69.9 million kilometres or 43.4 million miles) from the Sun. |
| 10 | 15:57 | Jupiter (mag. -2.3) begins retrograde motion. |
| 11 | 13:25 | Moon occults star Tejat - μ Gem (mag. +2.9). |
| 11 | 19:40 | Mercury (mag. +0.3) at greatest elongation 27.7 degrees west in the morning sky. |
| 12 | 19:06 | First quarter moon. |
| 12 | 22:39 | Moon 6.6 degrees south of Pollux (mag. +1.1). |
| 15 | 08:48 | Moon 2.8 degrees north of Regulus (mag. +1.4). |
| 16 | 22:12 | Mars (mag. +1.6) 6.5 degrees north of Aldebaran (mag. +0.9). |
| 16 | 22:13 | Moon at perigee approx. 364,208 kilometres or 226,308 miles from the Earth. |
| 18 | 02:37 | Venus (mag. -3.9) at aphelion 0.728 AU (approx. 109 million km or 67.7 million miles) from the Sun. |
| 18 | 22:14 | Moon 7.6 degrees north of Spica (mag. +1.0). |
| 19 | 11:13 | Full moon. |
| 22 | 07:40 | Moon 8.0 degrees north of Antares (mag. +1.0). |
| 22 | 17:03 | Ceres (mag. +7.8) 2.5 degrees north of Moon. |
| 22 | 18:00 | Lyrids meteor shower peaks ZHR = 20. |
| 23 | 03:47 | Uranus at solar conjunction. |
| 23 | 11:36 | Jupiter (mag. -2.4) 1.6 degrees south of Moon. |
| 25 | 14:27 | Moon occults Saturn (mag. +0.6). |
| 26 | 22:19 | Last quarter moon. |
| 28 | 18:23 | Moon at apogee approx. 404,500 km or 251,400 miles from the Earth. |
| 30 | 00:58 | Saturn (mag. +0.6) begins retrograde motion. |
| 30 | 07:49 | Neptune (mag. +7.9) 3.5 degrees north of Moon. |