Portal:Astronomy/Events/March 2021
| 2 March, 05:19 | Moon at perigee |
| 6 March, 10:59 | Mercury at greatest western elongation |
| 10 March, 23:36 | Neptune at conjunction |
| 13 March, 10:21 | New moon |
| 18 March, 05:04 | Moon at apogee |
| 20 March, 09:37 | Earth northward equinox |
| 26 March, 06:17 | Venus at superior conjunction |
| 28 March, 18:48 | Full moon |
| 30 March, 06:12 | Moon at perigee |