• The AWS Systems Manager CloudWatch Dashboard will no longer be available after April 30, 2026. Customers can continue to use Amazon CloudWatch console to view, create, and manage their Amazon CloudWatch dashboards, just as they do today. For more information, see [Amazon CloudWatch Dashboard documentation](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Dashboards.html). 

# Updating a change calendar


You can update the description of a change calendar, but not its name. Although you can change the default state of a calendar, be aware that this reverses the behavior of change actions during events that are associated with the calendar. For example, if you change the state of a calendar from **Open by default** to **Closed by default**, unwanted changes might be made during event periods when the users who created the associated events aren't expecting changes.

When you update a change calendar, you're editing the Change Calendar document that you created when you created the entry. Change Calendar is a tool in AWS Systems Manager.

**To update a change calendar**

1. Open the AWS Systems Manager console at [https://console.aws.amazon.com/systems-manager/](https://console.aws.amazon.com/systems-manager/).

1. In the navigation pane, choose **Change Calendar**.

1. In the list of calendars, choose the name of the calendar that you want to update.

1. On the calendar's details page, choose **Actions, Edit**.

1. In **Description**, you can change the description text. You can't edit the name of a change calendar.

1. To change the calendar state, in **Calendar type**, choose a different value. Be aware that this reverses the behavior of change actions during events that are associated with the calendar. Before you change the calendar type, you should verify with other Change Calendar users that changing the calendar type doesn't allow unwanted changes during events that they have created.
   + **Open by default** – The calendar is open (Automation actions can run until an event starts) then closed for the duration of an associated event.
   + **Closed by default** – The calendar is closed (Automation actions can't run until an event starts) but open for the duration of an associated event.

1. Choose **Save**.

   Your calendar can't prevent or allow any actions until you add at least one event. For information about how to add an event, see [Creating a Change Calendar event](change-calendar-create-event.md).