Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2013 4 10.  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   07:20:01   (  49.23, -76.39) 04/14/2013   07:19:49    (  49.61, -78.64)  167.97             12
 04/14/2013   08:58:43   (  49.89,-100.83) 04/14/2013   09:01:04    (  50.47,-103.62)  208.81            141
 04/16/2013   18:17:59   (  49.98, -80.33) 04/16/2013   18:09:54    (  49.70, -81.92)  118.09            485
 04/16/2013   19:56:52   (  49.97,-105.05) 04/16/2013   19:51:22    (  49.59,-107.25)  163.34            330
 04/16/2013   21:31:54   (  36.20,-124.99) 04/16/2013   21:28:52    (  35.69,-127.58)  239.28            182