Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2013 4 9.  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)
 04/14/2013   07:20:00   (  49.24, -76.37) 04/14/2013   07:19:48    (  49.62, -78.63)  169.13             12
 04/14/2013   08:58:42   (  49.89,-100.82) 04/14/2013   09:01:03    (  50.47,-103.62)  209.98            141
 04/16/2013   18:17:59   (  49.99, -80.34) 04/16/2013   18:09:54    (  49.70, -81.92)  117.96            485
 04/16/2013   19:56:52   (  49.99,-105.06) 04/16/2013   19:51:22    (  49.59,-107.25)  163.21            330
 04/16/2013   21:31:54   (  36.21,-124.99) 04/16/2013   21:28:53    (  35.75,-127.59)  239.53            181