Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 9 13.  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)
 09/18/2013   15:10:04   (  22.61, 159.79) 09/18/2013   15:11:52    (  23.17, 157.18)  274.95            108
 09/21/2013   03:31:56   (  22.67, 147.47) 09/21/2013   03:28:27    (  23.67, 145.43)  236.00            209
 09/26/2013   15:59:34   (  22.58, 147.41) 09/26/2013   16:02:43    (  23.24, 144.50)  306.40            189
 10/04/2013   15:10:07   (  22.60, 159.77) 10/04/2013   15:12:06    (  23.19, 157.17)  273.88            119
 10/07/2013   03:31:56   (  22.64, 147.46) 10/07/2013   03:28:27    (  22.84, 145.63)  189.09            209