Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and NOAA-19
TLE Epoch: 2017 12 16.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2017   14:45:57   (  80.71, -88.98) 12/21/2017   14:44:55  (  80.70, -89.03)    1.60                62
 12/21/2017   15:36:40   ( -80.72,  78.30) 12/21/2017   15:35:54  ( -80.71,  78.46)    2.94                46
 12/21/2017   16:27:20   (  80.71,-114.31) 12/21/2017   16:26:56  (  80.71,-114.41)    1.96                24
 12/21/2017   17:18:03   ( -80.72,  52.97) 12/21/2017   17:17:55  ( -80.72,  53.09)    2.14                 8
 12/21/2017   18:08:43   (  80.71,-139.64) 12/21/2017   18:08:57  (  80.71,-139.79)    2.68                14
 12/21/2017   18:59:26   ( -80.71,  27.64) 12/21/2017   18:59:56  ( -80.72,  27.72)    1.53                30
 12/21/2017   19:50:07   (  80.73,-165.32) 12/21/2017   19:50:58  (  80.72,-165.17)    3.25                51