Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 4 29.  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   (  22.64, 147.39) 05/05/2013   16:01:23    (  23.28, 144.43)  310.71             64
 05/13/2013   15:10:42   (  22.65, 159.79) 05/13/2013   15:10:42    (  23.19, 157.10)  282.08              0
 05/21/2013   15:59:54   (  22.58, 147.49) 05/21/2013   16:01:27    (  23.27, 144.45)  320.47             93