Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 7 4.  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)
 07/05/2012   15:59:32   (  22.63, 147.42) 07/05/2012   15:59:51    (  23.25, 144.63)  293.72             19
 07/13/2012   15:11:01   (  19.31, 158.99) 07/13/2012   15:10:05    (  19.81, 156.45)  271.26             56
 07/21/2012   15:59:30   (  22.64, 147.40) 07/21/2012   15:59:50    (  23.26, 144.62)  293.71             20
 07/29/2012   15:10:48   (  19.51, 159.05) 07/29/2012   15:09:56    (  20.04, 156.51)  272.12             52