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Google Cloud Scheduler cron expression: every 30 minutes
To run a Google Cloud Scheduler job every 30 minutes, use:
*/30 * * * *Every 30 minutes.
Your week at a glance
Upcoming runs
| # | Local | UTC | From now |
|---|
Copy-ready code
Why use this schedule
Twice an hour, on the hour and half past. Light enough for moderately heavy jobs.
- Generating a rolling report
- Syncing a CRM to a data warehouse
- Cleaning expired sessions
First runs, as an example
Starting from 1 January 2027, evaluated in UTC:
| # | Date and time (UTC) |
|---|---|
| 1 | Fri, 01 Jan 2027, 00:00:00 |
| 2 | Fri, 01 Jan 2027, 00:30:00 |
| 3 | Fri, 01 Jan 2027, 01:00:00 |
| 4 | Fri, 01 Jan 2027, 01:30:00 |
| 5 | Fri, 01 Jan 2027, 02:00:00 |
| 6 | Fri, 01 Jan 2027, 02:30:00 |
Every 30 minutes in every dialect
| System | Expression |
|---|---|
| Google Cloud Scheduler (this page) | */30 * * * * |
| Quartz | 0 */30 * * * ? |
| Spring | 0 */30 * * * * |
| Crontab | */30 * * * * |
| Kubernetes | */30 * * * * |
| AWS EventBridge | */30 * * * ? * |
| Jenkins | H/30 * * * * |
| GitHub Actions | */30 * * * * |
| node-cron | */30 * * * * |
| Apache Airflow | */30 * * * * |
| Azure Functions | 0 */30 * * * * |
Need to translate a different expression? Use the cron converter.
Ready-to-use Google Cloud Scheduler config
Drop this into your project. The expression is the one above.
gcloud scheduler jobs create http my-job \
--schedule="*/30 * * * *" \
--time-zone="Etc/UTC" \
--uri="https://example.com/run" \
--http-method=POSTThe Google Cloud Scheduler fields, in order: minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-7, 0 and 7 = Sunday).
Things to watch out for in Google Cloud Scheduler
- Cloud Scheduler uses unix-cron, so */15 runs every 15 minutes at :00, :15, :30 and :45.
- Cloud Scheduler takes any tz database zone (default UTC) and runs on wall-clock time, so daylight saving can make jobs run or not run unexpectedly. Google recommends UTC to avoid that.
The common mistake with this schedule
If you want "every half hour starting at :10" you need a list like 10,40, not */30, which always lands on :00 and :30.
Frequently asked questions
How do I run a Google Cloud Scheduler job every 30 minutes?
Use */30 * * * *. Every 30 minutes.
What is the every 30 minutes cron expression in other systems?
Quartz: 0 */30 * * * ?; Spring: 0 */30 * * * *; Crontab: */30 * * * *. The table on this page lists every dialect.
Which time zone does Google Cloud Scheduler use for this schedule?
Cloud Scheduler takes any tz database zone (default UTC) and runs on wall-clock time, so daylight saving can make jobs run or not run unexpectedly. Google recommends UTC to avoid that.