| Code | Display | Comments |
|---|
 Q<integer>S | every <integer> seconds | |
| Q<integer>M | every <integer> minutes | |
| Q<integer>H | every <integer> hours | |
| Q<integer>D | every <integer> days | |
| Q<integer>W | every <integer> weeks | |
| Q<integer>L | every <integer> months (Lunar cycle) | |
| Q<integer>J<day#> | repeats on a particular day of the week, | |
| BID | twice a day at institution-specified times | |
| TID | three times a day at institution-specified times | |
| QID | four times a day at institution-specified times | |
| xID | "X" times per day at institution-specified times, where X is a numeral 5 or greater. | |
| QAM | in the morning at institution-specified time | |
| QSHIFT | during each of three eight-hour shifts at institution-specified times | |
| QOD | every other day | |
| QHS | every day before the hour of sleep | |
| QPM | in the evening at institution-specified time | |
| C | service is provided continuously between start time and stop time | |
| U <spec> | for future use, where <spec> is an interval specification as defined by the UNIX cron specification. | |
| PRN | given as needed | |
| PRNxxx | where xxx is some frequency code | |
| Once | one time only. | |
| Meal Related Timings | <timing>C ("cum")<meal> | |
| A | Ante (before) | |
| P | Post (after) | |
| I | Inter | |
| M | Cibus Matutinus (breakfast) | |
| D | Cibus Diurnus (lunch) | |
| V | Cibus Vespertinus (dinner) | |