//
A standard Unix cron expression consists of five space-separated fields representing specific time intervals:
```
┌───────────── Minute (0 - 59)
│ ┌───────────── Hour (0 - 23)
│ │ ┌───────────── Day of the Month (1 - 31)
│ │ │ ┌───────────── Month of the Year (1 - 12 or JAN - DEC)
│ │ │ │ ┌───────────── Day of the Week (0 - 6 or SUN - SAT, 0 = Sunday)
│ │ │ │ │
```
):** Represents 'every' possible value within the field (e.g. *` in the minute field means every minute).1,15,30 in the minute field).1-5 in the day-of-week field means Monday through Friday).*/15 in the minute field executes every 15 minutes).Verifying a cron expression before deploying scheduled jobs to production prevents costly timing mistakes, such as inadvertently triggering database backups during peak traffic hours. The parser calculates and displays the exact upcoming execution dates and times in your local timezone and UTC, providing complete schedule visibility.
*/15 * * * *) into the Cron Input bar.*), step values (/), lists (,), and ranges (-).Scenario: Scheduling a daily morning standup notification bot.
0 9 * * 1-5
At 09:00 AM, Monday through Friday
Triggers at 9:00 AM on weekdays (Monday through Friday).
Scenario: Polling an external data feed during business operations.
*/15 8-17 * * *
Every 15 minutes, between 08:00 AM and 05:59 PM
Executes at 15-minute intervals throughout business hours.