Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 7 20.  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)
 07/24/2013   15:59:32   (  22.59, 147.46) 07/24/2013   16:01:29    (  23.21, 144.61)  300.28            117
 08/01/2013   15:09:54   (  22.59, 159.86) 08/01/2013   15:10:56    (  23.19, 157.27)  274.38             62
 08/04/2013   03:31:40   (  22.65, 147.57) 08/04/2013   03:28:11    (  25.94, 144.93)  453.74            209
 08/09/2013   15:59:06   (  22.60, 147.55) 08/09/2013   16:01:51    (  23.29, 144.57)  314.67            165