Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2016 4 15.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2016   11:28:22   ( -81.01, 134.54) 04/27/2016   11:29:38  ( -81.01, 134.43)    2.00                76
 04/27/2016   12:19:17   (  81.01, -58.08) 04/27/2016   12:20:22  (  81.00, -57.94)    2.54                65
 04/27/2016   13:10:23   ( -81.01, 109.45) 04/27/2016   13:11:07  ( -81.00, 109.39)    1.30                44
 04/27/2016   14:01:19   (  81.01, -83.54) 04/27/2016   14:01:53  (  81.02, -83.71)    3.19                34
 04/27/2016   14:52:25   ( -81.01,  83.99) 04/27/2016   14:52:37  ( -81.00,  83.99)    0.75                12
 04/27/2016   15:43:20   (  81.01,-108.63) 04/27/2016   15:43:22  (  81.00,-108.75)    2.21                 2
 04/27/2016   16:34:27   ( -81.01,  58.52) 04/27/2016   16:34:07  ( -81.00,  58.58)    1.19                20
 04/27/2016   17:25:22   (  81.01,-134.09) 04/27/2016   17:24:52  (  81.01,-134.16)    1.22                30
 04/27/2016   18:16:29   ( -81.01,  33.06) 04/27/2016   18:15:37  ( -81.00,  33.17)    2.06                52