Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 3 24.  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)
 03/26/2013   15:10:54   (  21.42, 159.49) 03/26/2013   15:10:33    (  21.95, 156.81)  283.07             21
 04/03/2013   16:00:15   (  22.59, 147.37) 04/03/2013   16:01:04    (  23.24, 144.43)  309.50             49
 04/11/2013   15:11:27   (  20.85, 159.29) 04/11/2013   15:10:57    (  21.38, 156.64)  281.59             30
 04/19/2013   16:00:31   (  22.61, 147.34) 04/19/2013   16:01:15    (  23.28, 144.42)  308.06             44