Simultaneous Nadir Overpasses (SNOs) near equator between NOAA-19 and NPP
TLE Epoch: 2013 5 1.  Predictions up to the next  14.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 05/09/2013   04:09:43   (  29.99, 136.82) 05/09/2013   04:00:41    (  29.81, 135.80)   99.69            542
 05/09/2013   05:00:39   ( -30.00, -55.92) 05/09/2013   04:51:22    ( -29.81, -56.87)   93.86            557
 05/09/2013   05:51:47   (  29.95, 111.31) 05/09/2013   05:42:10    (  29.75, 110.45)   86.19            577
 05/09/2013   06:42:43   ( -29.96, -81.43) 05/09/2013   06:32:52    ( -29.81, -82.24)   80.39            591