Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2014 9 10.  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)
 09/14/2014   03:21:13   (  19.85, 155.36) 09/14/2014   03:22:02    (  18.55, 149.89)  592.76             49
 09/14/2014   15:57:46   (  11.17, 151.24) 09/14/2014   15:54:29    (  12.16, 146.63)  514.80            197
 09/27/2014   04:20:28   (  22.64, 140.20) 09/27/2014   04:20:20    (  21.61, 134.85)  563.31              8
 09/27/2014   15:14:26   (  10.02, 162.04) 09/27/2014   15:10:50    (  10.68, 157.37)  516.81            216
 10/10/2014   03:36:44   (  22.69, 151.28) 10/10/2014   03:36:13    (  21.65, 145.93)  562.34             31