# Mark Events in the Monitoring Timeline

[introduction-to-blackfire](https://www.youtube-nocookie.com/embed/xMNcV6cN7A4?rel=0&showinfo=0&modestbranding=1&autoplay=0)

You may want to visualize specific events in your Monitoring timeline to check the impact of an action, like a deployment.

![](../images/monitoring/monitoring-events.png)

It is possible to mark events in the Monitoring timeline using the following curl command:

> **Note**
>
> The `name` parameter can be up to 64 characters long.
>
> The `timestamp` parameter is optional (default to current datetime) and must be a valid unix timestamp.