Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 4 25.  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)
 04/27/2013   15:11:16   (  21.48, 159.45) 04/27/2013   15:10:56    (  21.99, 156.79)  280.15             20
 05/05/2013   16:00:19   (  22.62, 147.38) 05/05/2013   16:01:22    (  23.29, 144.44)  310.52             63
 05/13/2013   15:10:46   (  22.54, 159.76) 05/13/2013   15:10:44    (  23.07, 157.07)  281.57              2
 05/21/2013   15:59:58   (  22.60, 147.47) 05/21/2013   16:01:27    (  23.25, 144.44)  318.43             89