Simultaneous Nadir Overpasses (SNOs) near equator between NOAA-19 and NPP
TLE Epoch: 2013 5 13.  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)
 05/21/2013   15:35:06   (  29.97, -34.45) 05/21/2013   15:25:50    (  29.75, -35.44)   98.84            556
 05/21/2013   16:26:00   ( -29.99, 132.82) 05/21/2013   16:16:32    ( -29.81, 131.87)   93.86            568
 05/21/2013   17:17:11   (  29.99, -59.97) 05/21/2013   17:07:21    (  29.81, -60.83)   85.25            590
 05/21/2013   18:08:04   ( -29.96, 107.32) 05/21/2013   17:58:04    ( -29.93, 106.47)   81.86            600