Maintenance Tasks

Every 3 days at midnight

Log cleanup. This page shows you how to implement this cron schedule with detailed examples and execution times.

Runs per day

Next executions

Expression length

Cron Expression

0 0 */3 * *

Human Readable

At minute 0, hour 0, day */3

Field Breakdown

Field	Value	Meaning
Minute	0	When during the hour (0-59)
Hour	0	What hour of the day (0-23)
Day	*/3	What day of the month (1-31)
Month	*	What month (1-12)
Day of Week	*	What day of the week (0-7, 0=Sunday)

Next 10 Execution Times

2026-07-30 00:00:00 UTC

2026-08-03 00:00:00 UTC

Note: Times shown in UTC. Adjust for your local timezone as needed.

Implementation Examples

Linux Crontab

0 0 */3 * * /path/to/your/script.sh

Add this line to your crontab file using crontab -e

Docker Compose

services:
  cron-job:
    image: your-app:latest
    command: |
      sh -c 'echo "0 0 */3 * * /app/script.sh" | crontab - && crond -f'

Kubernetes CronJob

apiVersion: batch/v1
kind: CronJob
metadata:
  name: every-3-days-at-midnight
spec:
  schedule: "0 0 */3 * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: job
            image: your-app:latest
            command: ["/app/script.sh"]
          restartPolicy: OnFailure

GitHub Actions

name: Every 3 days at midnight
on:
  schedule:
    - cron: '0 0 */3 * *'
jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Run task
        run: ./script.sh