Cron Expression for Every 2 Hours
The cron expression 0 */2 * * * runs every 2 hours. Perfect for regular data processing, system checks, and moderate frequency automation tasks.
Cron Expression
Format: minute hour day month weekday (e.g., "*/5 * * * *" for every 5 minutes)
About This Schedule
Expression: 0 */2 * * *
Frequency: Custom schedule
Common Uses:
- Custom automation tasks
- Scheduled maintenance
- Data processing
- System monitoring
Note: This is a custom cron expression. Make sure to test it thoroughly before using in production.
Results
Enter a cron expression to see the results here.
Frequently Asked Questions
What times does this run throughout the day?
This runs at midnight, 2am, 4am, 6am, 8am, 10am, noon, 2pm, 4pm, 6pm, 8pm, and 10pm - that's 12 times per day at even hours.
How do I run every 2 hours starting at 1am instead?
Change the hour field to '1-23/2': The expression '0 1-23/2 * * *' runs at 1am, 3am, 5am, 7am, 9am, 11am, 1pm, 3pm, 5pm, 7pm, 9pm, and 11pm.
When should I use every 2 hours vs every hour?
Use every 2 hours when hourly is too frequent for your needs. It's ideal for tasks that don't require up-to-the-minute freshness but still need regular updates throughout the day.
Practical Examples
Database Backup
Create regular database backups throughout the day.
Weather Data Sync
Update weather data from external API.
Cache Warming
Pre-populate cache with frequently accessed data.
Common Issues & Solutions
For tasks that might exceed 2 hours, implement proper error handling and consider alerting mechanisms for failures.
If you need guaranteed execution during business hours only, modify the expression: '0 8-18/2 * * *' runs every 2 hours from 8am to 6pm.
Monitor disk space if your tasks create files or logs. Running 12 times daily can accumulate data quickly without proper cleanup.