Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 20.  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)
 08/25/2013   15:59:33   (  22.58, 147.43) 08/25/2013   16:02:11    (  23.21, 144.53)  305.27            158
 09/02/2013   15:09:57   (  22.61, 159.83) 09/02/2013   15:11:35    (  23.18, 157.20)  276.94             98
 09/05/2013   03:31:44   (  22.66, 147.52) 09/05/2013   03:28:15    (  23.95, 145.37)  262.48            209
 09/10/2013   15:59:11   (  22.61, 147.51) 09/10/2013   16:02:26    (  23.28, 144.52)  314.99            195
 09/13/2013   02:42:04   (  22.69, 159.93) 09/13/2013   02:38:34    (  27.27, 157.19)  579.06            210