Cron: weekdays at 9 AM
The cron expression `0 9 * * 1-5` fires Monday through Friday at 09:00. The most common business-hours schedule.
# expression
0 9 * * 1-5 Means: At 09:00 on every day-of-week from Monday through Friday.
→ Open in cron builder (pre-filled)
# common use cases
- Morning digest emails to the team.
- Business-hours data sync (avoid the weekend traffic patterns).
- On-call rotation reminders.
# next fires (sample)
Mon 09:00Tue 09:00Wed 09:00Thu 09:00Fri 09:00
# pitfalls
- POSIX: 1-5 = Mon-Fri. Quartz/AWS: 2-6 = Mon-Fri (Sunday is 1, not 0). Translate before pasting.
- Business hours are timezone-dependent. Schedule in the team timezone via the cron-builder, or in UTC if your runner does not support timezone overrides.
- Holidays still fire. Add a check at the top of the job: `if (isPublicHoliday(today)) exit 0`.