~/devtools / cron / every-month
tool::cron-guide

cron every-month

0 0 1 * *

Every 1st of Month

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Field Breakdown
0
Minute (0–59)
at 0
0
Hour (0–23)
at 0
1
Day of Month (1–31)
at 1
*
Month (1–12)
any
*
Day of Week (0–6)
any
0–59
0–23
1–31
1–12
0–6 (Sun–Sat)

Runs on the first day of each month at midnight. The day-of-month field is set to 1. Used for monthly billing, invoicing, monthly summaries, and any task that follows a calendar-month cycle.

Next 5 Executions (Example)
UTC example times after 2026-01-01
#1Thu, Jan 1, 2026, 12:00 AM UTC
#2Sun, Feb 1, 2026, 12:00 AM UTC
#3Sun, Mar 1, 2026, 12:00 AM UTC
#4Wed, Apr 1, 2026, 12:00 AM UTC
#5Fri, May 1, 2026, 12:00 AM UTC

Platform Usage

Linux Crontab— Run crontab -e and add the line
# crontab -e
0 0 1 * * /path/to/script.sh
# With logging:
0 0 1 * * /path/to/script.sh >> /var/log/myjob.log 2>&1
Kubernetes CronJob— Set in spec.schedule field
apiVersion: batch/v1
kind: CronJob
metadata:
  name: my-cronjob
spec:
  schedule: "0 0 1 * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: my-job
            image: my-image:latest
          restartPolicy: OnFailure
GitHub Actions— Add to on.schedule trigger
on:
  schedule:
    - cron: '0 0 1 * *'

jobs:
  my-job:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: ./my-script.sh

Common Use Cases

  • ▸Automated invoice and billing generation
  • ▸Monthly usage report emails
  • ▸Old data archiving and deletion
  • ▸SSL certificate expiry warnings
  • ▸Monthly database maintenance

Related Presets

* * * * *every minute→*/5 * * * *every 5 minutes→*/10 * * * *every 10 minutes→*/15 * * * *every 15 minutes→
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