Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 10 21.  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)
 10/23/2013   03:31:15   (  21.53, 147.82) 10/23/2013   03:28:05    (  21.14, 146.09)  184.66            190
 10/28/2013   15:58:55   (  22.64, 147.58) 10/28/2013   16:02:24    (  25.42, 145.11)  398.50            209
 10/31/2013   02:41:46   (  22.70, 160.00) 10/31/2013   02:38:16    (  24.28, 158.01)  268.62            210
 11/05/2013   15:09:03   (  22.62, 160.05) 11/05/2013   15:12:19    (  23.23, 157.26)  294.13            196
 11/08/2013   03:29:31   (  18.33, 148.78) 11/08/2013   03:27:14    (  17.94, 146.91)  201.62            137
 11/16/2013   02:40:10   (  20.77, 160.72) 11/16/2013   02:37:12    (  20.43, 159.03)  180.77            178