Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 15.  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)
 08/17/2013   15:10:11   (  22.59, 159.78) 08/17/2013   15:11:17    (  23.15, 157.22)  269.60             66
 08/20/2013   03:32:00   (  22.65, 147.47) 08/20/2013   03:28:31    (  25.95, 144.89)  451.47            209
 08/25/2013   15:59:33   (  22.62, 147.44) 08/25/2013   16:02:10    (  23.29, 144.55)  305.01            157
 09/02/2013   15:09:58   (  22.64, 159.83) 09/02/2013   15:11:35    (  23.23, 157.20)  276.59             97
 09/05/2013   03:31:46   (  22.69, 147.51) 09/05/2013   03:28:16    (  23.95, 145.37)  260.28            210
 09/10/2013   15:59:13   (  22.63, 147.50) 09/10/2013   16:02:27    (  23.32, 144.52)  314.52            194