Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 6 15.  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)
 06/22/2013   15:59:35   (  22.60, 147.49) 06/22/2013   16:01:25    (  23.25, 144.55)  309.91            110
 06/30/2013   15:09:55   (  22.62, 159.89) 06/30/2013   15:10:39    (  23.19, 157.24)  278.95             44
 07/03/2013   03:31:41   (  22.67, 147.60) 07/03/2013   03:28:12    (  27.24, 144.58)  592.18            209
 07/08/2013   15:59:06   (  22.63, 147.59) 07/08/2013   16:01:20    (  23.29, 144.61)  313.77            134