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, -68.79)  182.00             77
 04/19/2012   08:08:51   (  49.91, -88.41) 04/19/2012   08:10:05    (  50.38, -90.97)  189.83             74
 04/19/2012   09:47:44   (  49.91,-113.13) 04/19/2012   09:51:32    (  50.55,-116.27)  234.21            228
 04/21/2012   19:07:00   (  49.96, -92.64) 04/21/2012   19:00:20    (  49.65, -94.48)  136.87            400
 04/21/2012   20:45:53   (  49.95,-117.36) 04/21/2012   20:41:48    (  49.54,-119.81)  182.19            245