Journal Timeline 12: Clearing the skies by John September 13, 02002 written by John September 13, 02002 > Clearing the skies An interesting study from USA Today of aircraft movement on September 11th. The study shows sky maps over half hour intervals as well as complimentary charts and commentary. Lovely map work. Related crashpositiontimeline 0 comment 0 FacebookTwitterGoogle +Pinterest John previous post HM Bark Endeavour in Greenwich next post Atomic clock comes to RGO You may also like A brief history of Leap Seconds September 16, 02018 On the trail of Admiral Cloudesley Shovell September 3, 02017 The State of Temporal Standards May 29, 02017 The Ceremony of the Keys December 26, 02016 Syzygy and the Supermoon Lunar Eclipse September 23, 02015 10 years on the beach September 11, 02015 Decoding Harrison August 25, 02014 Spring cleaning March 30, 02014 The Venice Time Machine February 17, 02014 Cloud Hosting for the Long Now January 26, 02014 Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed.