Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2014 5 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)
 05/08/2014   16:07:23   (  22.67, 149.32) 05/08/2014   16:07:23    (  23.86, 144.60)  500.27              0
 05/09/2014   03:23:44   (  22.67, 152.75) 05/09/2014   03:20:12    (  21.91, 148.96)  398.83            212
 05/21/2014   15:25:31   (  18.95, 159.26) 05/21/2014   15:24:27    (  19.87, 154.70)  488.98             64
 06/03/2014   03:49:41   (  17.88, 147.38) 06/03/2014   03:51:03    (  16.71, 142.30)  554.81             82
 06/03/2014   16:26:09   (  13.25, 143.28) 06/03/2014   16:23:28    (  14.18, 139.07)  465.79            161