Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 12 10.  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,  46.65) 12/22/2018   06:04:57  (  80.31,  46.70)    1.28                65
 12/22/2018   06:54:48   ( -80.32,-146.09) 12/22/2018   06:55:42  ( -80.31,-145.96)    2.48                54
 12/22/2018   07:45:53   (  80.32,  21.14) 12/22/2018   07:46:27  (  80.32,  21.29)    2.85                34
 12/22/2018   08:36:49   ( -80.32,-171.59) 12/22/2018   08:37:13  ( -80.34,-171.69)    2.90                24
 12/22/2018   09:27:53   (  80.34,  -4.04) 12/22/2018   09:27:57  (  80.32,  -4.12)    2.76                 4
 12/22/2018   10:18:49   ( -80.34, 163.24) 12/22/2018   10:18:42  ( -80.32, 163.22)    2.53                 7
 12/22/2018   11:09:54   (  80.34, -29.54) 12/22/2018   11:09:27  (  80.32, -29.53)    1.90                27
 12/22/2018   12:00:50   ( -80.34, 137.73) 12/22/2018   12:00:12  ( -80.32, 137.81)    2.57                38
 12/22/2018   12:51:55   (  80.34, -55.05) 12/22/2018   12:50:57  (  80.32, -54.94)    2.54                58