CloudFlare has made available an app to celebrate Earth Hour later today.

The app was developer rather quickly in response to a request made by a user.

It would make the sites go dark for an hour based on the visitor’s time zone and provide information about the event.

CloudFlare said:

Turn on the app, and for one hour on March 31 (today, for some; tomorrow for many) your site will go dark and present a message to the site visitor explaining Earth Hour. The app offers site owners the chance to “Save the world, 60 minutes every 365 days at a time.”