Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2013 2 20.  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)
 02/25/2013   07:19:08   (  49.34, -76.23) 02/25/2013   07:18:57    (  49.70, -78.49)  167.92             11
 02/25/2013   08:57:51   (  49.94,-100.71) 02/25/2013   09:00:13    (  50.50,-103.51)  208.96            142
 02/27/2013   18:17:08   (  49.95, -80.21) 02/27/2013   18:09:04    (  49.65, -81.78)  117.52            484
 02/27/2013   19:56:01   (  49.95,-104.93) 02/27/2013   19:50:32    (  49.54,-107.10)  162.81            329
 02/27/2013   21:31:10   (  36.59,-125.00) 02/27/2013   21:28:10    (  36.10,-127.59)  238.23            180