Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 9 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)
 09/26/2013   15:59:34   (  22.61, 147.41) 09/26/2013   16:02:42    (  23.26, 144.51)  305.80            188
 10/04/2013   15:10:07   (  22.61, 159.77) 10/04/2013   15:12:04    (  23.19, 157.19)  272.89            117
 10/07/2013   03:31:57   (  22.69, 147.45) 10/07/2013   03:28:27    (  22.98, 145.61)  191.74            210
 10/12/2013   15:59:30   (  22.59, 147.42) 10/12/2013   16:02:53    (  23.26, 144.52)  306.29            203
 10/15/2013   02:42:25   (  22.67, 159.83) 10/15/2013   02:38:56    (  27.04, 157.25)  551.34            209