Run Cron Every Hour

To run a job every hour at minute 0, use: 0 * * * *

Explanation

0 = at minute 0
* = every hour (0-23)
* = every day of month
* = every month
* = every day of week

Hourly Variations

0 * * * * - Every hour at minute 0
30 * * * * - Every hour at minute 30
*/2 * * * * - Every 2 hours
*/4 * * * * - Every 4 hours
0 */6 * * * - Every 6 hours