| New moon | Apr 11, 1918 | |
| Waxing crescent | from Apr 12, 1918 to Apr 17, 1918 | |
| Moon first quarter | Apr 18, 1918 | |
| Growing moon | from Apr 19, 1918 to Apr 25, 1918 | |
| Full moon | Apr 26, 1918 | |
| Waning moon | from Apr 27, 1918 to May 2, 1918 | |
| Moon third quarter | May 3, 1918 | |
| Waning crescent | from May 4, 1918 to May 9, 1918 |
| New moon | May 10, 1918 | |
| Waxing crescent | from May 11, 1918 to May 16, 1918 | |
| Moon first quarter | May 17, 1918 | |
| Growing moon | from May 18, 1918 to May 25, 1918 | |
| Full moon | May 26, 1918 | |
| Waning moon | from May 27, 1918 to Jun 1, 1918 | |
| Moon third quarter | Jun 2, 1918 | |
| Waning crescent | from Jun 3, 1918 to Jun 7, 1918 |