Real-Time Parser • Next Execution Dates
Cron Expression Generator & Explainer
Build, debug, and translate crontab schedules into plain English with live upcoming execution timestamps and copy-ready Linux commands.
⏱️Schedule: Runs every 15 minutes past hour 0:00 on day 1,15 of the month on Monday through Friday.
Minute
0 - 59
Hour
0 - 23
Day (Month)
1 - 31
Month
1 - 12
Day (Week)
0 - 6 (Sun-Sat)
Next Upcoming Executions (LOCAL):8 calculated
#1Tue, Sep 15, 2026, 12:00 AM
#2Tue, Sep 15, 2026, 12:15 AM
#3Tue, Sep 15, 2026, 12:30 AM
#4Tue, Sep 15, 2026, 12:45 AM
#5Thu, Oct 1, 2026, 12:00 AM
#6Thu, Oct 1, 2026, 12:15 AM
#7Thu, Oct 1, 2026, 12:30 AM
#8Thu, Oct 1, 2026, 12:45 AM
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Understanding Standard Crontab Syntax
Cron expressions consist of 5 required positional parameters separated by whitespace. Each parameter specifies a discrete time component:
| Field # | Field Name | Allowed Values | Special Characters |
|---|---|---|---|
| 1 | Minute | 0 – 59 | * , - / |
| 2 | Hour | 0 – 23 (24-hour) | * , - / |
| 3 | Day of Month | 1 – 31 | * , - / ? L W |
| 4 | Month | 1 – 12 (or JAN – DEC) | * , - / |
| 5 | Day of Week | 0 – 6 (0 = Sunday, or SUN – SAT) | * , - / ? L # |
Asterisk (*) & Comma (,)
The asterisk (*) represents all possible values in that field. The comma (,) creates a discrete list of values, such as 1,15,30 to run on specific minutes or days.
Hyphen (-) & Slash (/)
The hyphen (-) specifies a continuous range, like 1-5 for Monday through Friday. The slash (/) specifies step increments, like */10 for every 10 units.
Troubleshooting & Knowledge