Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2014 3 25.  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)
 03/31/2014   03:48:57   (  19.93, 146.52) 03/31/2014   03:49:44    (  18.82, 141.87)  502.97             47
 03/31/2014   16:25:33   (  11.05, 142.38) 03/31/2014   16:22:13    (  11.88, 138.61)  420.85            200
 04/12/2014   15:50:51   (  22.59, 153.15) 04/12/2014   15:53:54    (  23.84, 147.80)  564.67            183
 04/13/2014   03:07:11   (  22.67, 156.60) 04/13/2014   03:06:40    (  21.76, 152.20)  464.01             31
 04/13/2014   15:43:20   (  10.02, 152.90) 04/13/2014   15:39:43    (   6.92, 148.53)  591.31            217