Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 6 4.  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)
 06/06/2013   15:59:53   (  22.64, 147.43) 06/06/2013   16:01:26    (  23.32, 144.51)  309.05             93
 06/14/2013   15:10:19   (  22.62, 159.82) 06/14/2013   15:10:43    (  23.20, 157.19)  276.79             24
 06/22/2013   15:59:32   (  22.63, 147.50) 06/22/2013   16:01:25    (  23.30, 144.55)  311.19            113
 06/30/2013   15:09:48   (  22.63, 159.92) 06/30/2013   15:10:40    (  23.21, 157.24)  282.31             52