Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 1 6.  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   02:32:06   (  19.15, 162.67) 01/16/2013   02:33:06    (  18.47, 159.60)  331.96             60
 01/16/2013   15:08:50   (  11.45, 158.39) 01/16/2013   15:05:38    (  11.93, 156.24)  239.77            192
 01/28/2013   03:42:59   (  10.38, 146.46) 01/28/2013   03:46:30    (   9.54, 142.72)  421.37            211
 01/28/2013   14:40:13   (  11.02, 165.52) 01/28/2013   14:40:08    (  11.65, 162.58)  328.38              5
 01/28/2013   16:19:36   (  20.47, 142.27) 01/28/2013   16:18:58    (  21.04, 139.44)  301.28             38
 01/29/2013   03:35:35   (  22.69, 146.22) 01/29/2013   03:31:58    (  25.47, 143.64)  405.29            217