1. Trailspotter

    Omega loop contrail over Toronto: Veni Vidi Volavi?.. [Likely Bombardier Test Flight from Montreal]

    These flickr photos of an unusually shaped contrail were taken on 14-May-2015 in Hamilton, Ontario: and University of Toronto: The time of the latter, 13:23, is probably EDT (17:23 UTC), whereas the time of the former, 12:56 is probably EST (17:56 UTC). A partial contrail loop is also seen...
  2. Mick West

    Solved: U-Shaped Contrail near San Francisco [NASA502 Survey, again]

    Several tweets about this today: I'm assuming these are near real-time, as people tweet from their phones. That would put this one at around 12:50 PDT (UTC-7) 19:50 UTC. It appears to be looking due south, from...