Cron Expression Examples for Developers
Common cron examples for developer jobs, backups, reports, retries, and operational schedules, with cautions about timezone behavior.
Useful everyday examples
Use */5 * * * * for every five minutes, 0 9 * * 1-5 for weekdays at 09:00, 0 0 1 * * for monthly jobs, and 30 2 * * * for a daily 02:30 job.
Write the timezone next to every schedule in documentation. Server local time, UTC containers, Kubernetes CronJobs, and managed schedulers may behave differently.
Avoid accidental load spikes
If many jobs run at exactly the top of the hour, they can create avoidable load. Consider spreading jobs across minute offsets and adding jitter where the scheduler supports it.
Test before production
Preview upcoming executions and confirm daylight-saving behavior before enabling a schedule that sends messages, charges customers, or deletes data.
Related tools
Dev Debug Helpers
OpenCron Expression Builder & Visualizer
Parse cron expressions, explain schedules, preview next runs, and start from common developer examples.
Converters
OpenTimestamp Converter
Convert Unix seconds, Unix milliseconds, and ISO date strings with readable UTC and local output.
Dev Debug Helpers
OpenAPI Log Analyzer
Analyze API logs for ERROR/WARN/INFO counts, duplicate exceptions, correlation IDs, and timeline buckets.
Related workflows
JWT Tools
Inspect JWT header and payload claims, check token times, and debug auth failures faster.
Timestamp and Date Tools
Convert Unix timestamps and inspect time values found in APIs, logs, JWTs, and databases.
API Debugging Tools
Inspect the pieces that usually explain API failures: JSON, JWTs, headers, query params, cURL, and status codes.
Log Tools
Clean noisy logs, extract trace and correlation IDs, and connect log output to payload debugging tools.