Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 12 16.  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)
 12/18/2013   02:42:50   (  22.64, 159.77) 12/18/2013   02:39:21    (  24.94, 157.82)  323.48            209
 12/23/2013   15:10:11   (  22.58, 159.80) 12/23/2013   15:13:20    (  23.15, 157.21)  273.31            189
 12/26/2013   03:30:45   (  18.58, 148.47) 12/26/2013   03:28:23    (  18.26, 146.79)  180.74            142
 01/03/2014   02:41:19   (  20.64, 160.50) 01/03/2014   02:38:23    (  20.33, 158.97)  163.33            176
 01/08/2014   15:09:01   (  22.62, 160.12) 01/08/2014   15:12:30    (  27.23, 158.26)  546.06            209
 01/11/2014   03:27:59   (  13.13, 150.03) 01/11/2014   03:27:08    (  12.75, 148.09)  214.27             51