Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 12 20.  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,  46.69) 12/22/2018   06:04:57  (  80.31,  46.77)    2.32                65
 12/22/2018   06:54:47   ( -80.32,-146.09) 12/22/2018   06:55:41  ( -80.31,-145.95)    2.84                54
 12/22/2018   07:45:52   (  80.32,  21.18) 12/22/2018   07:46:27  (  80.33,  21.04)    3.02                35
 12/22/2018   08:36:48   ( -80.32,-171.60) 12/22/2018   08:37:12  ( -80.34,-171.68)    2.65                24
 12/22/2018   09:27:53   (  80.32,  -4.32) 12/22/2018   09:27:57  (  80.34,  -4.37)    2.02                 4
 12/22/2018   10:18:48   ( -80.34, 163.23) 12/22/2018   10:18:41  ( -80.31, 163.23)    2.52                 7
 12/22/2018   11:09:54   (  80.32, -29.83) 12/22/2018   11:09:27  (  80.34, -29.78)    2.46                27
 12/22/2018   12:00:49   ( -80.34, 137.72) 12/22/2018   12:00:11  ( -80.32, 137.82)    2.83                38
 12/22/2018   12:51:54   (  80.34, -55.01) 12/22/2018   12:50:57  (  80.34, -55.19)    3.39                57