Cron Syntax Guide

LiteLambda uses the standard 5-field UNIX cron syntax to determine when your Python script should run.

The 5 Fields

A cron expression consists of five space-separated fields representing different time units.

Timezone

All cron schedules in LiteLambda are evaluated in UTC. Keep this in mind when scheduling jobs intended to run during local business hours.

Special Characters

• * (Asterisk): Matches any value. E.g., * in the minute field means "every minute".
• , (Comma): Value list separator. E.g., 1,15,30 in the minute field means minutes 1, 15, and 30.
• - (Hyphen): Range of values. E.g., 1-5 in the day-of-week field means Monday through Friday.
• / (Slash): Step values. E.g., */10 in the minute field means "every 10 minutes".

Common Examples

* * * * *       # Every minute
*/5 * * * *     # Every 5 minutes
0 * * * *       # Every hour, on the hour
0 9 * * *       # Every day at 9:00 AM UTC
0 9 * * 1-5     # Every weekday (Mon-Fri) at 9:00 AM UTC
0 0 1 * *       # Midnight on the 1st day of every month