Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 4 30.  Predictions up to the next  30.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 05/05/2013   16:00:19   (  22.62, 147.38) 05/05/2013   16:01:23    (  23.26, 144.43)  310.69             64
 05/13/2013   15:10:41   (  22.70, 159.80) 05/13/2013   15:10:41    (  23.21, 157.11)  281.79              0
 05/21/2013   15:59:53   (  22.63, 147.50) 05/21/2013   16:01:25    (  23.33, 144.46)  319.93             92