Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 9 14.  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)
 09/15/2012   15:09:59   (  20.89, 159.45) 09/15/2012   15:09:30    (  21.38, 156.82)  278.32             29
 09/23/2012   15:59:06   (  22.63, 147.45) 09/23/2012   15:59:40    (  23.24, 144.60)  299.80             34
 10/01/2012   15:11:24   (  18.20, 158.64) 10/01/2012   15:10:10    (  18.72, 156.17)  266.79             74
 10/09/2012   16:01:21   (  19.64, 146.37) 10/09/2012   16:00:31    (  20.11, 143.81)  272.85             50