Every 4 Hours
Cron Expression: 0 */4 * * *
Every 4 hours using the cron expression shown above. This page helps you understand how to schedule tasks every 4 hours.
How This Cron Expression Works
The cron expression 0 */4 * * * breaks down as follows:
Minute
Hour
Day of Month
Month
Day of Week
0
*/4
*
*
*
Explanation:
- Runs at minute 0 (the start of each hour)
- Runs every 4 hours
- Runs every day of every month
Interactive Cron Builder
Use the interactive tool below to modify this cron expression and see how changes affect the schedule:
""
minute
(0-59)
hour
(0-23)
day
(1-31)
month
(1-12)
weekday
(0-6)
| * | every value |
|---|---|
| , | list of values |
| - | range of values |
| / | interval values |
| @yearly | Once a year (0 0 1 1 *) |
| @annually | Same as @yearly |
| @monthly | Once a month (0 0 1 * *) |
| @weekly | Once a week (0 0 * * 0) |
| @daily | Once a day (0 0 * * *) |
| @hourly | Once an hour (0 * * * *) |
| @reboot | At system startup |
Common Use Cases
This cron expression is commonly used for:
- Resource-intensive backup operations
- Updating cached data or content
- Processing batch transactions
- Sending scheduled notifications or alerts
- Running analytics or monitoring tasks