| SOLARDAY | 24-hour period, in astronomy |
| DIEL | Involving a 24-hour period, in biology |
| ONEDAY | "At some 24-hour period in the future...": 2 wds. |
| SAROS | 18-year period in astronomy |
| DAYS | 24-hour periods in birthday suit (4) |
| ILKADAY | (Referring to) every one of the 24-hour periods in a week (7) |
| MONDAY | Twenty-four-hour period in month around October, November, December, initially |
| NIGHT | Period of darkness in a 24 hour period of time (5) |
| TUESDAY | Staged duet, say, in a 24-hour period (7) |
| REALDAY | Genuine 24-hour period, e.g. in a recount of a life (4,3) |
| TORNADOES | During 2011's "Super Outbreak," a record 190 of these were recorded in a 24-hour period across six states |
| DECAY | Excessive confectionery for starters in 24-hour period might lead to this? (5) |
| ADAY | Per each 24-hour period |
| LEAPDAY | 24-hour period occurring every fourth year (4,3) |
| ONEDAYSTRIKE | 24-hour period of industrial action (3-3-6) |
| DAYOFREST | Stayed for another 24 hour period (3,2,4) |
| DIEM | Involving a 24 hour period |
| BADHAIRDAY | Difficult 24-hour period (3,4,3) |
| THEOTHERDAY | Alternative 24-hour period recently (3,5,3) |
| WEEKDAY | Little girl, daughter sheltered for a 24-hour period |