Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 5 2.  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)
 05/05/2013   16:00:17   (  22.59, 147.38) 05/05/2013   16:01:23    (  23.28, 144.43)  310.91             66
 05/13/2013   15:10:33   (  22.64, 159.81) 05/13/2013   15:10:41    (  23.24, 157.12)  283.92              8
 05/21/2013   15:59:35   (  22.64, 147.55) 05/21/2013   16:01:26    (  23.32, 144.46)  325.05            111
 05/29/2013   15:09:38   (  22.60, 160.03) 05/29/2013   15:10:44    (  23.24, 157.14)  304.04             66