Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 1 11.  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, 162.62) 01/16/2013   02:33:10    (  18.58, 159.56)  330.96             58
 01/16/2013   15:08:56   (  11.35, 158.35) 01/16/2013   15:05:42    (  11.83, 156.21)  239.02            194
 01/28/2013   03:43:24   (  10.84, 146.28) 01/28/2013   03:46:47    (  10.01, 142.57)  417.05            203
 01/28/2013   14:40:35   (  10.83, 165.40) 01/28/2013   14:40:21    (  11.49, 162.50)  324.86             14
 01/28/2013   16:20:04   (  19.94, 142.06) 01/28/2013   16:19:17    (  20.52, 139.27)  298.61             47
 01/29/2013   03:35:54   (  22.65, 146.15) 01/29/2013   03:32:18    (  26.01, 143.46)  463.31            216
 02/09/2013   15:50:50   (  22.63, 149.91) 02/09/2013   15:53:03    (  23.43, 146.36)  374.15            133