What are the 5 standard fields in a Linux crontab expression?

The 5 standard cron fields in left-to-right order are: 1. Minute (0–59), 2. Hour (0–23), 3. Day of the Month (1–31), 4. Month (1–12), and 5. Day of the Week (0–6 where 0 is Sunday).

⏰ Linux Cron Job Schedule & Expression Builder

Crontab Generator & Schedule Describer

Build, test, and describe 5-field cron schedule expressions with human-readable English translations and upcoming execution timelines.

1. Minute (0-59)

2. Hour (0-23)

3. Day Month (1-31)

4. Month (1-12)

5. Day Week (0-6)

Cron String:

Common Schedules:

Every 5 Minutes (*/5 * * * *) Every Hour (0 * * * *) Daily Midnight (0 0 * * *) Weekdays at 4 AM (0 4 * * 1-5) 1st of Month (0 0 1 * *) Weekly Sunday (0 0 * * 0)

Human-Readable English Description“Every 15 minutes, every hour, every day.”
Valid 5-field POSIX standard crontab expression.

Simulated Next 5 Scheduled Trigger Times (UTC):

Crontab Special Characters & Wildcards

* (Asterisk) : Matches any and every possible value in that time field.
, (Comma) : Specifies a list of discrete values (e.g. 1,15,30).
- (Hyphen) : Defines an inclusive continuous range (e.g. 1-5 for Monday to Friday).
/ (Slash) : Specifies step intervals (e.g. */10 for every 10 units).

Crontab Generator & Schedule Describer

Simulated Next 5 Scheduled Trigger Times (UTC):

Crontab Special Characters & Wildcards

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