Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 13.  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   (  22.62, 159.79) 08/17/2013   15:11:17    (  23.19, 157.23)  269.49             66
 08/20/2013   03:32:01   (  22.67, 147.47) 08/20/2013   03:28:32    (  25.97, 144.88)  451.77            209
 08/25/2013   15:59:33   (  22.62, 147.43) 08/25/2013   16:02:10    (  23.27, 144.54)  304.91            157
 09/02/2013   15:09:59   (  22.60, 159.81) 09/02/2013   15:11:36    (  23.16, 157.18)  276.45             97
 09/05/2013   03:31:46   (  22.66, 147.51) 09/05/2013   03:28:17    (  24.03, 145.35)  268.88            209