Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 4 30.  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)
 05/07/2013   15:19:59   (  22.63, 158.12) 05/07/2013   15:23:15    (  23.55, 154.02)  432.25            196
 05/08/2013   02:36:29   (  22.67, 161.55) 05/08/2013   02:36:00    (  22.04, 158.45)  325.99             29
 05/08/2013   15:12:39   (  10.02, 157.82) 05/08/2013   15:09:03    (   6.57, 154.76)  510.33            216
 05/20/2013   03:46:42   (  13.22, 145.70) 05/20/2013   03:49:24    (  12.31, 141.77)  438.11            162
 05/20/2013   14:43:27   (  10.00, 165.18) 05/20/2013   14:42:57    (   9.26, 161.73)  388.13             30
 05/20/2013   16:23:23   (  17.53, 141.45) 05/20/2013   16:21:55    (  18.18, 138.44)  326.89             88