Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 2 13.  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)
 02/14/2013   15:59:21   (  22.59, 147.49) 02/14/2013   16:00:11    (  23.26, 144.56)  308.82             50
 02/22/2013   15:09:53   (  22.13, 159.79) 02/22/2013   15:09:44    (  22.64, 157.07)  285.34              9
 03/02/2013   15:58:58   (  22.59, 147.61) 03/02/2013   16:00:24    (  23.27, 144.53)  324.65             86
 03/10/2013   15:09:14   (  22.60, 160.06) 03/10/2013   15:09:44    (  23.27, 157.21)  301.68             30