Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 9 13.  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)
 09/22/2013   03:02:24   (  11.36, 157.91) 09/22/2013   03:05:38    (  10.32, 153.39)  507.88            194
 09/22/2013   15:39:02   (  19.50, 153.72) 09/22/2013   15:38:08    (  20.24, 150.10)  387.38             54
 09/23/2013   02:54:39   (  22.65, 157.93) 09/23/2013   02:51:02    (  25.84, 154.39)  505.04            217
 10/04/2013   15:08:18   (  22.63, 162.05) 10/04/2013   15:11:54    (  23.89, 157.35)  500.27            216
 10/05/2013   02:24:51   (  22.68, 165.45) 10/05/2013   02:24:43    (  21.90, 161.72)  393.31              8
 10/05/2013   04:06:55   (  22.66, 139.94) 10/05/2013   04:06:13    (  21.91, 136.35)  379.00             42
 10/05/2013   15:00:55   (  10.00, 161.75) 10/05/2013   14:57:18    (   8.37, 158.40)  410.06            217