Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 12 20.  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)
 12/20/2013   03:45:53   (  22.65, 145.82) 12/20/2013   03:42:16    (  22.95, 142.47)  345.54            217
 01/01/2014   03:13:51   (  17.54, 154.84) 01/01/2014   03:15:19    (  16.52, 150.38)  488.09             88
 01/01/2014   15:50:37   (  13.08, 150.57) 01/01/2014   15:47:53    (  13.84, 147.01)  393.14            164
 01/13/2014   15:17:09   (  22.63, 160.69) 01/13/2014   15:19:53    (  23.78, 155.78)  517.71            164
 01/14/2014   02:33:33   (  22.69, 164.12) 01/14/2014   02:32:39    (  21.92, 160.17)  414.61             54
 01/14/2014   04:14:35   (  19.08, 139.50) 01/14/2014   04:13:07    (  18.28, 135.69)  411.53             88