Cron Expression: Three times per hour at 0, 20, and 40 minutes past
Cron Expression
0,20,40 * * * *Three times per hour at 0, 20, and 40 minutes past
Click the expression to select it, then copy.
Quick Answer
The cron expression for "three times per hour at 0, 20, and 40 minutes past" is `0,20,40 * * * *`. Copy and paste this into your crontab, Vercel cron config, GitHub Actions workflow, or any standard cron-compatible scheduler.
Field-by-Field Breakdown
| Field | Value | Meaning |
|---|---|---|
| Minute | 0,20,40 | At minute values: 0,20,40 |
| Hour | * | Every hour |
| Day of Month | * | Every day of month |
| Month | * | Every month |
| Day of Week | * | Every day of week |
Common Use Cases
- →Tri-hourly polling
- →Frequent check-ins
How to Use This Expression
Vercel Cron Jobs
// vercel.json
{
"crons": [{
"path": "/api/your-endpoint",
"schedule": "0,20,40 * * * *"
}]
}GitHub Actions
# .github/workflows/scheduled.yml
on:
schedule:
- cron: '0,20,40 * * * *'Linux crontab
0,20,40 * * * * /path/to/your-command.sh