Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 19.  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)
 08/20/2013   03:32:01   (  22.70, 147.46) 08/20/2013   03:28:31    (  25.94, 144.89)  445.09            210
 08/25/2013   15:59:33   (  22.61, 147.44) 08/25/2013   16:02:11    (  23.24, 144.54)  305.18            158
 09/02/2013   15:09:57   (  22.63, 159.83) 09/02/2013   15:11:35    (  23.21, 157.20)  276.95             98
 09/05/2013   03:31:44   (  22.65, 147.53) 09/05/2013   03:28:15    (  23.92, 145.38)  261.11            209
 09/10/2013   15:59:11   (  22.60, 147.51) 09/10/2013   16:02:27    (  23.25, 144.51)  315.21            196
 09/13/2013   02:42:03   (  22.64, 159.94) 09/13/2013   02:38:34    (  27.24, 157.20)  581.40            209