Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 12 16.  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)
 12/19/2013   03:53:20   (  10.07, 146.10) 12/19/2013   03:56:56    (   7.66, 141.34)  587.75            216
 12/19/2013   14:50:10   (  13.18, 165.59) 12/19/2013   14:50:26    (  14.13, 161.37)  468.19             16
 12/19/2013   16:29:46   (  21.81, 142.18) 12/19/2013   16:29:31    (  22.64, 138.05)  434.36             15
 12/20/2013   03:45:54   (  22.67, 145.82) 12/20/2013   03:42:17    (  22.98, 142.46)  346.14            217
 01/01/2014   03:13:58   (  17.75, 154.78) 01/01/2014   03:15:23    (  16.70, 150.33)  486.85             85
 01/01/2014   15:50:43   (  12.94, 150.53) 01/01/2014   15:47:56    (  13.71, 146.99)  392.60            167
 01/13/2014   15:17:18   (  22.59, 160.65) 01/13/2014   15:19:55    (  23.72, 155.77)  515.41            157
 01/14/2014   02:33:42   (  22.65, 164.09) 01/14/2014   02:32:40    (  21.85, 160.19)  412.07             62
 01/14/2014   04:14:42   (  18.93, 139.51) 01/14/2014   04:13:07    (  18.16, 135.72)  409.25             95