Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 2 16.  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)
 02/21/2018   05:12:40   ( -80.65,-125.22) 02/21/2018   05:13:40  ( -80.64,-125.05)    3.10                60
 02/21/2018   06:03:39   (  80.64,  41.85) 02/21/2018   06:04:26  (  80.65,  42.01)    3.32                47
 02/21/2018   06:54:41   ( -80.65,-150.62) 02/21/2018   06:55:10  ( -80.64,-150.48)    2.72                29
 02/21/2018   07:45:40   (  80.64,  16.45) 02/21/2018   07:45:56  (  80.66,  16.58)    2.83                16
 02/21/2018   08:36:42   ( -80.65,-176.03) 02/21/2018   08:36:40  ( -80.65,-175.91)    2.36                 2
 02/21/2018   09:27:41   (  80.65,  -8.95) 02/21/2018   09:27:26  (  80.66,  -8.85)    2.37                15
 02/21/2018   10:18:43   ( -80.66, 158.57) 02/21/2018   10:18:10  ( -80.65, 158.66)    2.01                33
 02/21/2018   11:09:42   (  80.65, -34.35) 02/21/2018   11:08:56  (  80.66, -34.28)    1.95                46
 02/21/2018   12:00:44   ( -80.66, 133.16) 02/21/2018   11:59:40  ( -80.65, 133.24)    1.69                64