Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 1 10.  Predictions up to the next  30.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 01/16/2013   02:32:12   (  19.27, 162.63) 01/16/2013   02:33:10    (  18.56, 159.57)  331.11             58
 01/16/2013   15:08:54   (  11.41, 158.37) 01/16/2013   15:05:41    (  11.86, 156.22)  239.10            193
 01/28/2013   03:43:20   (  10.73, 146.32) 01/28/2013   03:46:45    (   9.87, 142.60)  418.26            205
 01/28/2013   14:40:31   (  10.94, 165.44) 01/28/2013   14:40:20    (  11.57, 162.52)  325.78             11
 01/28/2013   16:19:59   (  20.11, 142.11) 01/28/2013   16:19:15    (  20.67, 139.31)  299.34             44
 01/29/2013   03:35:51   (  22.67, 146.16) 01/29/2013   03:32:14    (  25.81, 143.51)  441.08            217