cron0 9,12,15,18 * * 1-5

Four Times on Weekdays (9 AM, Noon, 3 PM, 6 PM)

“At 9, 12, 15, and 18:00, on Monday through Friday”

Runs at 9 AM, noon, 3 PM, and 6 PM UTC, Monday through Friday.

Special Patterns4 on weekdays runs/day

Want to customize this schedule or validate your own cron expression?

Try it live →

Field Breakdown

Field	Value	Meaning
minute	`0`	0
hour	`9,12,15,18`	9, 12, 15, and 18
day	`*`	every day of month
month	`*`	every month
weekday	`1-5`	Monday through Friday

minute

9,12,15,18

hour

day

month

1-5

weekday

Common Use Cases

✓Business-hours check-ins
✓Scheduled business reports
✓Customer data sync

Code Examples

Bash / crontab

# Run your script on schedule: 0 9,12,15,18 * * 1-5
0 9,12,15,18 * * 1-5 /path/to/your/script.sh

Node.js (node-cron)

import cron from 'node-cron';

cron.schedule('0 9,12,15,18 * * 1-5', () => {
  console.log('Running scheduled task');
});

Python (APScheduler)

from apscheduler.schedulers.blocking import BlockingScheduler

scheduler = BlockingScheduler()

@scheduler.scheduled_job('cron', minute='0', hour='9,12,15,18', day_of_week='1-5')
def my_job():
    print('Running scheduled task')

scheduler.start()

GitHub Actions Workflow

Generate a ready-to-use .github/workflows/schedule.yml file. Customize the name and download directly.

GitHub Actions

Workflow Name

Job ID

# .github/workflows/schedule.yml
name: Four Times on Weekdays (9 AM, Noon, 3 PM, 6 PM)

on:
  schedule:
    - cron: '0 9,12,15,18 * * 1-5'
  workflow_dispatch: # allow manual trigger

jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Run scheduled task
        run: |
          echo "Running on schedule: 0 9,12,15,18 * * 1-5"
          # Add your commands here

Save as .github/workflows/schedule.yml in your repository root

Cron Syntax Quick Reference

Field	Allowed Values	Special Chars
minute	0–59	* , - /
hour	0–23	* , - /
day of month	1–31	* , - /
month	1–12 or JAN–DEC	* , - /
day of week	0–7 or SUN–SAT	* , - /

Special characters: *= any value ,= list -= range / = step

Related Patterns — Special Patterns

0 0,12 * * *

Twice Daily (Midnight and Noon)

0 0,8,16 * * *

Three Times Daily (Every 8 Hours)

0 0,6,12,18 * * *

Four Times Daily (Every 6 Hours)

*/5 0-6 * * *

Every 5 Minutes Overnight (00:00–06:00)

0 0 29 2 *

February 29th (Leap Day)

Need to build your own cron expression from scratch?

Open the Cron Expression Builder →