Field syntax
*— any value5— exactly 51,3,5— list1-5— range*/15— every 15 (steps from 0)0-30/5— every 5 between 0 and 30
Common patterns
0 0 * * *— every day at midnight0 9 * * 1-5— every weekday at 9 AM*/15 9-17 * * 1-5— every 15 min during business hours0 0 1 */3 *— first of every 3 months at midnight
FAQ
Day of week — 0 or 7 for Sunday?
Standard cron accepts both. This tool uses 0–6 with 0 = Sunday; if you write 7 it's treated as Sunday.
Does this support non-standard fields (seconds, year)?
No — strictly 5 fields. Quartz, Spring, and some other dialects use 6 or 7 fields with seconds and an optional year; check your scheduler's docs if you need that.