Birdor Tools · Schedules

Cron Expression Visualizer

Turn opaque cron strings into a clear schedule. Birdor parses a standard 5-field cron expression, explains each segment, and previews the next few run times in your local timezone — ideal for double checking backup jobs, batch tasks, and cron-based workers.

Cron expression

Standard 5-field cron: minute hour day-of-month month day-of-week (no seconds).

Next runs are computed in UTC.

Template note: Every day at 09:00.

Common schedules

Click a template to prefill the cron expression. You can still edit it manually.

Field breakdown

Each column explains how that part of the cron expression is interpreted.

minute0

Custom minute pattern: 0

hour9

Custom hour pattern: 9

day-of-month*

Every day of the month

month*

Every month

day-of-week*

Every day of the week

Upcoming runs

Approximate schedule based on your local time zone.

Showing next 10 runs.

This visualizer uses a simplified cron model where day-of-month and day-of-week are treated with AND semantics. Real schedulers (like crond, Quartz, or cloud platforms) may differ slightly, so always double-check in your runtime environment.

This visualizer models a simplified cron behavior and runs entirely in your browser. Always validate critical schedules against the cron implementation used by your infrastructure (Linux crond, Quartz, Kubernetes, serverless platforms, etc.).