Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2012 9 12.  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   15:09:53   (  21.07, 159.50) 09/15/2012   15:09:26    (  21.57, 156.86)  278.59             27
 09/23/2012   15:58:39   (  22.61, 147.56) 09/23/2012   15:59:37    (  23.28, 144.62)  310.17             58
 10/01/2012   15:08:58   (  22.32, 159.92) 10/01/2012   15:08:52    (  22.86, 157.22)  283.79              6
 10/09/2012   15:57:57   (  22.58, 147.71) 10/09/2012   15:59:21    (  23.28, 144.66)  321.37             84