World Clock & Meeting Planner
Date & time Local only
Cron & Recurrence Rule Planner
Local onlyBuild, explain, compare, and preview Cron and RFC 5545 recurrence schedules.
Next run—
Shortest interval—
TimezoneAsia/Shanghai
Frequency checkNormal
Plain-language field explanation
minute 0 · hour 9 · every day of month · every month · weekdays 1-5
#Occurrence in selected timezone
How to use it
- 01
Choose Cron or RRULE
Select the target platform or build an iCalendar recurrence with start time, timezone, interval, weekdays, count, and exceptions.
- 02
Preview real occurrences
Inspect up to 100 generated dates in the selected IANA timezone and review frequency, platform limits, and DST-sensitive behavior.
- 03
Copy or export
Copy a ready platform snippet, compare two Cron expressions, or download a recurring ICS event.
Frequently asked questions
Why do Cron formats differ?
Unix-style systems usually use five fields, Quartz adds seconds and may add a year, while AWS uses a six-field order with a year. GitHub and Kubernetes add their own timezone and feature rules.
Does the preview handle timezones and DST?
Cron dates are generated with an IANA timezone and the recurrence library uses the browser Intl timezone data. Governments can change future rules, so recheck distant critical schedules.
What are EXDATE and RDATE?
In RFC 5545, EXDATE removes specific recurrence instances and RDATE adds explicit instances outside the main rule.
Will the tool run my job?
No. It only plans and exports schedules. Your CI, server, cloud scheduler, calendar, and permissions determine whether execution occurs.
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Keep working with other focused browser utilities.