Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2013 3 11.  Predictions up to the next  10.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 03/13/2013   07:19:19   (  49.60, -76.15) 03/13/2013   07:19:13    (  49.99, -78.41)  168.25              6
 03/13/2013   08:58:07   (  49.91,-100.74) 03/13/2013   09:00:35    (  50.45,-103.58)  210.98            148
 03/15/2013   18:17:26   (  49.99, -80.27) 03/15/2013   18:09:26    (  49.72, -81.87)  118.64            480
 03/15/2013   19:56:19   (  49.98,-104.99) 03/15/2013   19:50:54    (  49.60,-107.20)  163.88            325
 03/15/2013   21:31:25   (  36.44,-125.00) 03/15/2013   21:28:28    (  35.93,-127.59)  239.96            177