> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flashcat.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Service Calendar

> Service calendars define workdays and rest days, working with escalation rules or silence rules to enable differentiated handling by date type. A typical scenario is securities trading systems that only trigger alert notifications on trading days (workdays).

<Tip>**Plan requirement**: This feature requires an On-call Pro or higher subscription. [Learn more](https://flashcat.cloud/flashduty/price/)</Tip>

## Use Cases

***

| Scenario             | Description                                                       |
| -------------------- | ----------------------------------------------------------------- |
| **Escalation Rules** | Assign to different on-call personnel based on workdays/rest days |
| **Silence Rules**    | Only silence low-priority alerts on rest days                     |

## Creating a Calendar

***

Go to Incident Management → Service Calendar → **New Calendar**.

| Configuration            | Description                                                                                        |
| ------------------------ | -------------------------------------------------------------------------------------------------- |
| **Calendar Name**        | Recommend naming by business dimension, e.g., "Settlement Business System"                         |
| **Calendar Description** | Overview of business characteristics for quick team understanding                                  |
| **Management Team**      | Once configured, team members have full permissions for this calendar                              |
| **Link Holidays**        | Recommend linking national holidays for automatic holiday schedules, can also be adjusted manually |

<Tip>
  New calendars default to all workdays. After linking holidays, statutory holidays are automatically marked as rest days.
</Tip>

![Service Calendar](https://fcpub-1301667576.cos.ap-nanjing.myqcloud.com/flashduty/doc/rili.png)

## Editing a Calendar

***

| Action                    | Description                                                               |
| ------------------------- | ------------------------------------------------------------------------- |
| **Modify Basic Info**     | Calendar name, description, management team                               |
| **Bulk Mark Rest Days**   | Quickly mark by day of week, e.g., every Saturday and Sunday as rest days |
| **Single Day Adjustment** | Click on a date to toggle workday/rest day status                         |

![Edit Calendar](https://fcpub-1301667576.cos.ap-nanjing.myqcloud.com/flashduty/doc/rili-1.png)

<Warning>
  Deleting a calendar is irreversible. Please confirm no escalation rules or silence rules reference it before deletion.
</Warning>

## FAQ

***

<AccordionGroup>
  <Accordion title="What's the difference between a service calendar and a schedule?">
    They serve different purposes:

    * **Schedule**: Defines "who handles it", the recipient of incidents
    * **Service Calendar**: Defines "when to handle it", the time condition for escalation rules

    Service calendars are above schedules in hierarchy—first determining if it's a workday, then deciding whether to assign to on-call personnel.
  </Accordion>
</AccordionGroup>

## Related Topics

***

<CardGroup cols={2}>
  <Card title="Escalation Rules" icon="sitemap" href="/en/on-call/channel/escalation-rule">
    Reference service calendars in escalation rules
  </Card>

  <Card title="Noise Reduction" icon="volume-xmark" href="/en/on-call/channel/noise-reduction">
    Silence alerts by calendar type
  </Card>
</CardGroup>