Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 12 18.  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   06:03:51   (  80.32,  46.69) 12/22/2018   06:04:56  (  80.31,  46.78)    2.45                65
 12/22/2018   06:54:47   ( -80.32,-146.08) 12/22/2018   06:55:41  ( -80.31,-145.93)    3.08                54
 12/22/2018   07:45:52   (  80.32,  21.19) 12/22/2018   07:46:27  (  80.33,  21.05)    2.88                35
 12/22/2018   08:36:48   ( -80.32,-171.59) 12/22/2018   08:37:12  ( -80.34,-171.66)    2.36                24
 12/22/2018   09:27:53   (  80.32,  -4.32) 12/22/2018   09:27:57  (  80.34,  -4.36)    1.92                 4
 12/22/2018   10:18:49   ( -80.32, 162.91) 12/22/2018   10:18:42  ( -80.34, 162.93)    2.34                 7
 12/22/2018   11:09:54   (  80.32, -29.83) 12/22/2018   11:09:27  (  80.34, -29.77)    2.46                27
 12/22/2018   12:00:49   ( -80.34, 137.73) 12/22/2018   12:00:11  ( -80.32, 137.84)    3.11                38
 12/22/2018   12:51:54   (  80.34, -55.01) 12/22/2018   12:50:57  (  80.34, -55.18)    3.26                57