Four times a day
0 */6 * * * runs at 00:00, 06:00, 12:00, and 18:00. Common for batch syncs that should not run hourly.
Custom start
For 03:00 / 09:00 / 15:00 / 21:00 use 0 3-21/6 * * *.
Cron expression to run every 6 hours: 0 */6 * * *. Explain the schedule and preview upcoming runs.
Paste a cron → plain English + next runs. Everything stays in your browser.
5-field: min hour dom month dow
Plain English
On the hour, every 6 hours, every day
0 */6 * * *0 */6 * * * runs at 00:00, 06:00, 12:00, and 18:00. Common for batch syncs that should not run hourly.
For 03:00 / 09:00 / 15:00 / 21:00 use 0 3-21/6 * * *.