Since the image is actually rebuilt server-side to reflect the current rotation of the earth, it's simple to just rotate it with CSS based on the current time:

Since the image is actually rebuilt server-side to reflect the current rotation of the earth, it's simple to just rotate it with CSS based on the current time: http://jsfiddle.net/4taWt/1/ http://jsfiddle.net/4taWt/1/