Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2014 4 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)
 04/26/2014   04:06:32   (  22.67, 141.91) 04/26/2014   04:04:13    (  21.83, 137.89)  424.17            139
 05/08/2014   16:07:24   (  22.60, 149.31) 05/08/2014   16:07:26    (  23.71, 144.56)  500.54              2
 05/09/2014   03:23:44   (  22.68, 152.74) 05/09/2014   03:20:12    (  21.89, 148.96)  399.01            212
 05/21/2014   15:25:27   (  19.05, 159.30) 05/21/2014   15:24:25    (  20.00, 154.74)  489.60             62