Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 9 8.  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)
 09/10/2013   15:59:23   (  22.62, 147.47) 09/10/2013   16:02:27    (  23.26, 144.52)  309.93            184
 09/18/2013   15:10:03   (  22.61, 159.80) 09/18/2013   15:11:52    (  23.17, 157.18)  275.43            109
 09/21/2013   03:31:54   (  22.65, 147.48) 09/21/2013   03:28:25    (  23.55, 145.46)  229.61            209
 09/26/2013   15:59:31   (  22.59, 147.42) 09/26/2013   16:02:43    (  23.24, 144.50)  307.47            192
 10/04/2013   15:10:01   (  22.63, 159.79) 10/04/2013   15:12:05    (  23.22, 157.18)  275.79            124