| 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 |
| New moon | Jun 8, 1918 | |
| Waxing crescent | from Jun 9, 1918 to Jun 15, 1918 | |
| Moon first quarter | Jun 16, 1918 | |
| Growing moon | from Jun 17, 1918 to Jun 23, 1918 | |
| Full moon | Jun 24, 1918 | |
| Waning moon | from Jun 25, 1918 to Jun 30, 1918 | |
| Moon third quarter | Jul 1, 1918 | |
| Waning crescent | from Jul 2, 1918 to Jul 7, 1918 |