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

# Blackout Window

> Pause monitoring during planned maintenance to avoid unnecessary alerts.

If you need to temporarily pause monitoring for one or more webpages — for example, during scheduled website maintenance — you can set a Blackout Window. Polling will be suspended for the selected pages during the defined period.

## Adding a blackout window

<Tabs>
  <Tab title="One-time">
    For a single blackout period that runs once.

    <video src="https://mintcdn.com/cloudsineai/GGFMkurgY31ucZvT/videos/SetBlackoutPeriod.mp4?fit=max&auto=format&n=GGFMkurgY31ucZvT&q=85&s=c807cfe48baf9f944f0710d8cb890f01" controls={true} data-path="videos/SetBlackoutPeriod.mp4" />

    1. Go to **Blackout Period → Add Blackout Period**
    2. Select the webpages you want to pause monitoring for in the table.
    3. Select **Once** and set the **Start Date/Time** and **End Date/Time** for the blackout period
    4. Click **Save**
  </Tab>

  <Tab title="Recurring">
    Blackout period that happens on a regular schedule — for example, maintenance every night or every Weekend.

    <video src="https://mintcdn.com/cloudsineai/GGFMkurgY31ucZvT/videos/RecurringBlackoutPeriods.mp4?fit=max&auto=format&n=GGFMkurgY31ucZvT&q=85&s=353eccaa94a9949b880c5af253652d7f" controls={true} data-path="videos/RecurringBlackoutPeriods.mp4" />

    1. Go to **Blackout Period → Add Blackout Period**
    2. Select the webpages you want to pause monitoring for in the table.
    3. Select **Repeating** and set the **Effective From** and **Effective To** dates for the blackout period
    4. Select the **Frequency** and set the respective **Start Date/Time** and **End Date/Time**
    5. View the **Preview** Table to check the periods before they are added.
    6. Click **Save**

    | Field                     | Description                                               |
    | ------------------------- | --------------------------------------------------------- |
    | **Effective From / To**   | The period over which the recurring schedule stays active |
    | **Start Time / End Time** | The repeating time window during which polling is paused  |
    | **Days**                  | For weekly schedules, the days the blackout applies to    |
    | **Dates**                 | For monthly schedules, the days the blackout applies to   |

    <Note>
      If effective start/end dates occur in the middle of a recurring blackout period, the date and time for only that particular period will be overridden to the start/end of the effective dates.
    </Note>
  </Tab>
</Tabs>

## Managing existing blackout periods

<img src="https://mintcdn.com/cloudsineai/8ZIlWHy_IPpi_OxA/images/EditBlackoutTime.png?fit=max&auto=format&n=8ZIlWHy_IPpi_OxA&q=85&s=0d3970f394c37fa5d329a3874e2f3407" alt="Edit Blackout Time" width="4070" height="2287" data-path="images/EditBlackoutTime.png" />

Go to **Blackout Period → Blackout Periods** to view all configured windows. From here you can:

* **Edit** the timing of an existing blackout period
* **Delete** a blackout period if it's no longer needed

<Tip>
  Made changes to your webpage during the blackout window? Remember to update your baseline. See [Re-baselining Webpages](/defacement-monitor/managing-changes/re-baselining).
</Tip>