# Schedule Trigger

Trigger the workflow at a specified schedule.

---

The **Schedule Trigger** node allows your workflow to run automatically at predefined intervals.
For example: run every day at 8:00 AM, or on the 7th day of each month at 3:15 PM.

Every workflow must begin with a trigger node. Triggers can respond to events or be manually executed using the [Manual Trigger](/workflow/manual-trigger).

<img src="/img/workflow/schedule-trigger/node.png" alt="Schedule Trigger node in the workflow editor" style="max-width:316px;width:100%;display:inline;margin:0 auto;box-shadow:5px 5px 5px #eee" />

## Operations

This node accepts multiple rules, although only the **first** rule will be used as the active trigger.

The **Trigger Interval** parameter can be set for different time units, which enables other parameters. Available options include:

### Seconds
- **Description**: Triggers the workflow every few seconds.
- **Parameters**:
  - **Seconds Between Triggers**: Runs the workflow every *N* seconds.

### Minutes
- **Description**: Triggers the workflow at fixed minute intervals.
- **Parameters**:
  - **Minutes Between Triggers**: Runs the workflow every *N* minutes.

### Hours
- **Description**: Triggers the workflow every few hours, with optional control over the exact minute.
- **Parameters**:
  - **Hours Between Triggers**: Runs the workflow every *N* hours.
  - **Trigger at Minute**: Runs at minute *M* of each hour.

### Days
- **Description**: Triggers the workflow on a daily schedule, with control over hour and minute.
- **Parameters**:
  - **Days Between Triggers**: Runs the workflow every *N* days.
  - **Trigger at Hour**: Runs at hour *H* on each scheduled day.
  - **Trigger at Minute**: Runs at minute *M* of the scheduled hour.

### Weeks
- **Description**: Triggers the workflow weekly, with the option to choose specific weekdays and times.
- **Parameters**:
  - **Weeks Between Triggers**: Runs the workflow every *W* weeks.
  - **Trigger on Weekdays**: Select one or more weekdays (Sunday to Saturday) to run the workflow.
  - **Trigger at Hour**: Runs at hour *H* on the selected weekday(s).
  - **Trigger at Minute**: Runs at minute *M* of the selected hour.

### Months
- **Description**: Triggers the workflow monthly, with full control over the day, hour, and minute.
- **Parameters**:
  - **Months Between Triggers**: Runs the workflow every *M* months.
  - **Trigger at Day of Month**: Runs on the *D*th day of each month.
  - **Trigger at Hour**: Runs at hour *H* on the specified day.
  - **Trigger at Minute**: Runs at minute *M* of the specified hour.

### Custom (Cron)
- **Description**: Triggers the workflow based on a custom cron expression for advanced scheduling needs.
- **Parameters**:
  - **Expression**: A custom cron expression.
    *(See [crontab.guru](https://crontab.guru/examples.html) for help crafting cron schedules.)*