Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 12 22.  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)
 01/01/2014   03:13:58   (  17.75, 154.78) 01/01/2014   03:15:23    (  16.69, 150.33)  486.98             85
 01/01/2014   15:50:43   (  12.94, 150.52) 01/01/2014   15:47:56    (  13.72, 146.99)  392.67            167
 01/13/2014   15:17:21   (  22.59, 160.64) 01/13/2014   15:19:57    (  23.70, 155.75)  514.81            156
 01/14/2014   02:33:46   (  22.69, 164.07) 01/14/2014   02:32:43    (  21.92, 160.16)  411.29             63
 01/14/2014   04:14:45   (  18.91, 139.50) 01/14/2014   04:13:08    (  18.11, 135.72)  408.64             97