Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 7 19.  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)
 07/21/2012   15:59:29   (  22.64, 147.41) 07/21/2012   15:59:54    (  23.27, 144.60)  296.16             25
 07/29/2012   15:10:35   (  20.21, 159.22) 07/29/2012   15:09:54    (  20.71, 156.64)  275.06             41
 08/06/2012   15:59:10   (  22.62, 147.46) 08/06/2012   15:59:57    (  23.26, 144.56)  305.05             47
 08/14/2012   15:09:40   (  21.96, 159.71) 08/14/2012   15:09:28    (  22.50, 157.04)  281.75             12