Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 12 17.  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)
 12/20/2012   15:11:08   (  18.88, 158.86) 12/20/2012   15:10:05    (  19.38, 156.34)  270.50             63
 12/28/2012   15:59:27   (  22.63, 147.40) 12/28/2012   15:59:40    (  23.23, 144.63)  291.94             13
 01/05/2013   15:10:31   (  19.66, 159.15) 01/05/2013   15:09:41    (  20.16, 156.58)  274.20             50
 01/13/2013   15:58:36   (  22.61, 147.62) 01/13/2013   15:59:25    (  23.24, 144.70)  307.55             49