Cron every few hours

Hourly and multi-hour schedules for syncs, digests and cleanups. Remember that "*/2" in the hour field means 00:00, 02:00, 04:00 and so on, not "two hours after the last run". 28 schedules below, each with the exact expression, next five runs, the usual mistake and examples in 8 runtimes.

Every few minutes Once a day Weekdays and weekends Once a week Monthly and less often Other patterns

Hourly0 * * * *
Hourly at :1515 * * * *
Hourly at :3030 * * * *
Hourly at :4545 * * * *
Every 2 hours0 */2 * * *
Every 2 hours at :1515 */2 * * *
Every 2 hours at :3030 */2 * * *
Every 2 hours at :4545 */2 * * *
Every 3 hours0 */3 * * *
Every 3 hours at :1515 */3 * * *
Every 3 hours at :3030 */3 * * *
Every 3 hours at :4545 */3 * * *
Every 4 hours0 */4 * * *
Every 4 hours at :1515 */4 * * *
Every 4 hours at :3030 */4 * * *
Every 4 hours at :4545 */4 * * *
Every 6 hours0 */6 * * *
Every 6 hours at :1515 */6 * * *
Every 6 hours at :3030 */6 * * *
Every 6 hours at :4545 */6 * * *
Every 8 hours0 */8 * * *
Every 8 hours at :1515 */8 * * *
Every 8 hours at :3030 */8 * * *
Every 8 hours at :4545 */8 * * *
Every 12 hours0 */12 * * *
Every 12 hours at :1515 */12 * * *
Every 12 hours at :3030 */12 * * *
Every 12 hours at :4545 */12 * * *