How do I schedule a job twice a month?

Use the cron expression 0 0 1,15 * *. You can set this in crontab on Linux, or use a service like CronJobPro to schedule HTTP requests with this expression.

Monthly Schedules

Cron Job Twice a Month (1st and 15th) – Expression & Examples

Using 1,15 in the day-of-month field runs on both the 1st and 15th of each month — semi-monthly schedule.

Cron Expression

0 0 1,15 * *

Minute

(0-59)

Hour

(0-23)

1,15

Day of Month

(1-31)

Month

(1-12)

Day of Week

(0-6)

How It Works

Using 1,15 in the day-of-month field runs on both the 1st and 15th of each month — semi-monthly schedule.

Common Use Cases

Semi-monthly payroll
Bi-monthly invoicing
Insurance premium processing

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Frequently Asked Questions

What does `0 0 1,15 * *` mean in cron?

Using 1,15 in the day-of-month field runs on both the 1st and 15th of each month — semi-monthly schedule.

How do I use this cron expression?

On Linux/macOS, edit your crontab with crontab -e and add:
0 0 1,15 * * /path/to/your/script.sh
Or use CronJobPro to schedule HTTP requests with this expression — no server required.

What timezone does cron use?

By default, cron uses the system timezone. CronJobPro lets you set a specific timezone per job, so your schedules are predictable regardless of server location.