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.
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.”