Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 8 12.  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, 159.78) 08/17/2013   15:11:17    (  23.19, 157.23)  269.56             66
 08/20/2013   03:32:01   (  22.66, 147.47) 08/20/2013   03:28:32    (  25.96, 144.88)  450.81            209
 08/25/2013   15:59:33   (  22.64, 147.44) 08/25/2013   16:02:10    (  23.31, 144.55)  304.96            157
 09/02/2013   15:10:00   (  22.60, 159.81) 09/02/2013   15:11:37    (  23.17, 157.18)  276.57             97
 09/05/2013   03:31:47   (  22.64, 147.51) 09/05/2013   03:28:18    (  24.00, 145.35)  267.70            209