Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 12 11.  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)
 12/12/2012   15:59:25   (  22.62, 147.39) 12/12/2012   15:59:46    (  23.22, 144.59)  294.93             21
 12/20/2012   15:11:29   (  18.20, 158.65) 12/20/2012   15:10:15    (  18.69, 156.17)  267.39             74
 12/28/2012   16:00:36   (  20.96, 146.83) 12/28/2012   16:00:08    (  21.49, 144.20)  279.39             28
 01/03/2013   03:10:53   (  10.09, 154.64) 01/03/2013   03:14:21    (   7.24, 151.08)  503.81            208
 01/05/2013   15:13:36   (  14.11, 157.50) 01/05/2013   15:11:14    (  14.56, 155.25)  247.51            142