Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 4 26.  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   (  21.46, 159.44) 04/27/2013   15:10:56    (  21.97, 156.79)  280.19             20
 05/05/2013   16:00:20   (  22.61, 147.37) 05/05/2013   16:01:23    (  23.29, 144.43)  310.70             63
 05/13/2013   15:10:45   (  22.58, 159.77) 05/13/2013   15:10:44    (  23.10, 157.08)  281.78              1
 05/21/2013   15:59:58   (  22.59, 147.47) 05/21/2013   16:01:28    (  23.26, 144.44)  319.07             90