Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 4 21.  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)
 04/26/2017   13:33:53   (  80.86, -74.00) 04/26/2017   13:35:06  (  80.86, -74.17)    3.15                73
 04/26/2017   14:24:57   ( -80.86,  93.27) 04/26/2017   14:25:51  ( -80.86,  93.14)    2.39                54
 04/26/2017   15:15:55   (  80.86, -99.64) 04/26/2017   15:16:36  (  80.86, -99.58)    1.13                41
 04/26/2017   16:06:59   ( -80.86,  67.63) 04/26/2017   16:07:21  ( -80.86,  67.73)    1.81                22
 04/26/2017   16:57:56   (  80.86,-124.91) 04/26/2017   16:58:06  (  80.86,-124.98)    1.48                10
 04/26/2017   17:49:00   ( -80.87,  42.37) 04/26/2017   17:48:51  ( -80.86,  42.33)    1.05                 9
 04/26/2017   18:39:58   (  80.86,-150.55) 04/26/2017   18:39:36  (  80.86,-150.39)    2.84                22
 04/26/2017   19:31:02   ( -80.86,  16.74) 04/26/2017   19:30:21  ( -80.86,  16.93)    3.34                41
 04/26/2017   20:21:59   (  80.87,-175.82) 04/26/2017   20:21:06  (  80.86,-175.79)    0.76                53