Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2012 9 5.  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)
 09/14/2012   15:24:25   (  22.61, 155.94) 09/14/2012   15:27:58    (  23.37, 152.56)  356.51            213
 09/15/2012   02:41:01   (  22.69, 159.36) 09/15/2012   02:40:41    (  22.18, 157.03)  246.40             20
 09/15/2012   15:17:10   (  10.01, 155.61) 09/15/2012   15:13:34    (   6.98, 153.44)  412.96            216
 09/27/2012   03:53:42   (  17.60, 142.11) 09/27/2012   03:55:09    (  16.95, 139.30)  307.66             87
 09/27/2012   14:47:49   (  14.81, 163.76) 09/27/2012   14:45:40    (  15.23, 161.71)  224.54            129