Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 18.  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   03:32:00   (  22.65, 147.47) 08/20/2013   03:28:31    (  25.95, 144.89)  451.08            209
 08/25/2013   15:59:33   (  22.61, 147.44) 08/25/2013   16:02:11    (  23.25, 144.54)  305.26            158
 09/02/2013   15:09:58   (  22.59, 159.82) 09/02/2013   15:11:36    (  23.21, 157.20)  277.33             98
 09/05/2013   03:31:45   (  22.68, 147.52) 09/05/2013   03:28:16    (  23.91, 145.38)  258.01            209
 09/10/2013   15:59:12   (  22.60, 147.50) 09/10/2013   16:02:29    (  23.27, 144.51)  315.78            197
 09/13/2013   02:42:05   (  22.69, 159.92) 09/13/2013   02:38:35    (  27.14, 157.21)  564.90            210