Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 21.  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   15:59:32   (  22.63, 147.44) 08/25/2013   16:02:10    (  23.27, 144.55)  305.14            158
 09/02/2013   15:09:56   (  22.63, 159.83) 09/02/2013   15:11:35    (  23.20, 157.20)  277.26             99
 09/05/2013   03:31:43   (  22.65, 147.53) 09/05/2013   03:28:14    (  23.87, 145.39)  256.74            209
 09/10/2013   15:59:11   (  22.58, 147.51) 09/10/2013   16:02:28    (  23.27, 144.52)  316.00            197
 09/13/2013   02:42:02   (  22.67, 159.94) 09/13/2013   02:38:33    (  27.15, 157.22)  568.57            209