Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 12 14.  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)
 12/22/2018   06:03:52   (  80.32,  46.63) 12/22/2018   06:04:57  (  80.31,  46.70)    1.54                65
 12/22/2018   06:54:48   ( -80.32,-146.12) 12/22/2018   06:55:42  ( -80.31,-145.98)    2.64                54
 12/22/2018   07:45:53   (  80.32,  21.12) 12/22/2018   07:46:27  (  80.32,  21.29)    3.22                34
 12/22/2018   08:36:48   ( -80.34,-171.29) 12/22/2018   08:37:12  ( -80.31,-171.39)    3.03                24
 12/22/2018   09:27:53   (  80.34,  -4.05) 12/22/2018   09:27:57  (  80.32,  -4.12)    2.43                 4
 12/22/2018   10:18:49   ( -80.34, 163.20) 12/22/2018   10:18:42  ( -80.32, 163.20)    2.06                 7
 12/22/2018   11:09:54   (  80.34, -29.56) 12/22/2018   11:09:27  (  80.32, -29.53)    1.85                27
 12/22/2018   12:00:50   ( -80.34, 137.70) 12/22/2018   12:00:12  ( -80.32, 137.79)    2.43                38
 12/22/2018   12:51:55   (  80.34, -55.07) 12/22/2018   12:50:57  (  80.32, -54.94)    2.81                58