# modal.Cron | Modal Docs

- **URL:** https://modal.com/docs/sdk/py/latest/modal.Cron
- **Summary:** Cron jobs are a type of schedule, specified using the Unix cron tab syntax.

Copy page

modal.Cron
==========

    class Cron(modal.schedule.Schedule)

Cron jobs are a type of schedule, specified using the [Unix cron tab](https://crontab.guru/)
 syntax.

The alternative schedule type is the [`modal.Period`](https://modal.com/docs/sdk/py/latest/modal.Period)
.

    __init__(self, cron_string, timezone="UTC")

Construct a schedule that runs according to a cron expression string.

**Parameters**

cron_string str

Cron expression (see crontab.guru).

timezone str

IANA timezone name; defaults to UTC. (Default is "UTC")

**Usage**

    import modal
    app = modal.App()
    
    
    @app.function(schedule=modal.Cron("* * * * *"))
    def f():
        print("This function will run every minute")

We can specify different schedules with cron strings, for example:

    modal.Cron("5 4 * * *")  # run at 4:05am UTC every night
    modal.Cron("0 9 * * 4")  # runs every Thursday at 9am UTC

We can also optionally specify a timezone, for example:

    modal.Cron("0 6 * * *", timezone="America/New_York")

If no timezone is specified, the default is UTC.

[modal.Cron](https://modal.com/docs/sdk/py/latest/modal.Cron#modalcron)