Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2013 5 5.  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)
 05/08/2013   06:32:11   (  42.86, -66.37) 05/08/2013   06:31:07    (  43.23, -68.50)  177.32             64
 05/08/2013   08:09:05   (  49.93, -88.43) 05/08/2013   08:10:32    (  50.44, -90.94)  187.78             87
 05/08/2013   09:47:58   (  49.93,-113.15) 05/08/2013   09:52:00    (  50.55,-116.27)  232.22            242
 05/10/2013   19:07:11   (  50.00, -92.61) 05/10/2013   19:00:51    (  49.66, -94.59)  146.17            380
 05/10/2013   20:46:03   (  49.94,-117.31) 05/10/2013   20:42:18    (  49.49,-119.89)  191.60            225