Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 12 8.  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   (  80.31,  46.49) 12/22/2018   06:04:57  (  80.33,  46.52)    1.92                65
 12/22/2018   06:54:48   ( -80.31,-146.23) 12/22/2018   06:55:42  ( -80.33,-146.14)    2.36                54
 12/22/2018   07:45:53   (  80.31,  20.99) 12/22/2018   07:46:27  (  80.33,  21.11)    3.18                34
 12/22/2018   08:36:48   ( -80.33,-171.41) 12/22/2018   08:37:12  ( -80.33,-171.55)    2.65                24
 12/22/2018   09:27:53   (  80.33,  -4.19) 12/22/2018   09:27:57  (  80.33,  -4.30)    2.17                 4
 12/22/2018   10:18:49   ( -80.33, 163.09) 12/22/2018   10:18:42  ( -80.33, 163.04)    0.86                 7
 12/22/2018   11:09:54   (  80.33, -29.69) 12/22/2018   11:09:27  (  80.34, -29.71)    0.81                27
 12/22/2018   12:00:50   ( -80.33, 137.59) 12/22/2018   12:00:12  ( -80.33, 137.63)    0.97                38
 12/22/2018   12:51:55   (  80.33, -55.20) 12/22/2018   12:50:57  (  80.34, -55.12)    1.84                58