I completed the first prototype of my CZML QSO mapping template for Datasette yesterday. So far, I've implemented animation by using the interval property in CZML. Intervals can be attached to any (?) other tag it seems. I had to intuit what to do on a large degree based on the documentation. { "id" : "myObject" , "someProperty" : [ { "interval" : "2012-04-30T12:00:00Z/13:00:00Z" , "number" : 5 } , { "interval" : "2012-04-30T13:00:00Z/14:00:00Z" , "number" : 6 } , ] } I used CZML polylines to display each QSO. Each polyline has a show property. I attached an interval to each QSO of one minute, like so: . "id":"ea1ec", "name":"ea1ec", "polyline":{ "positions":{ "cartographicDegrees":[-106.55691216...