Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2012 4 15.  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)
 04/19/2012   06:32:11   (  42.00, -66.64) 04/19/2012   06:30:54    (  42.36, -68.80)  182.00             77
 04/19/2012   08:08:51   (  49.91, -88.41) 04/19/2012   08:10:04    (  50.44, -90.94)  189.79             73
 04/19/2012   09:47:44   (  49.92,-113.13) 04/19/2012   09:51:32    (  50.55,-116.27)  234.17            228
 04/21/2012   19:07:00   (  49.94, -92.63) 04/21/2012   19:00:19    (  49.59, -94.46)  136.84            401
 04/21/2012   20:45:54   (  50.00,-117.38) 04/21/2012   20:41:49    (  49.60,-119.84)  182.02            245