Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 8 9.  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)
 08/15/2013   15:47:15   (  22.62, 151.96) 08/15/2013   15:49:11    (  23.60, 147.82)  437.09            116
 08/16/2013   03:03:39   (  22.67, 155.41) 08/16/2013   03:01:57    (  22.03, 152.24)  333.29            102
 08/28/2013   02:31:16   (  13.15, 165.22) 08/28/2013   02:34:00    (  12.15, 160.92)  480.02            164
 08/28/2013   15:08:05   (  17.44, 160.92) 08/28/2013   15:06:35    (  18.15, 157.55)  365.77             90