Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and NOAA-19
TLE Epoch: 2017 12 14.  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, -88.96) 12/21/2017   14:44:55  (  80.71, -88.83)    2.38                62
 12/21/2017   15:36:40   ( -80.72,  78.26) 12/21/2017   15:35:55  ( -80.71,  78.32)    1.83                45
 12/21/2017   16:27:19   (  80.71,-114.29) 12/21/2017   16:26:55  (  80.71,-114.20)    1.59                24
 12/21/2017   17:18:02   ( -80.72,  52.93) 12/21/2017   17:17:55  ( -80.71,  52.95)    0.94                 7
 12/21/2017   18:08:42   (  80.71,-139.62) 12/21/2017   18:08:56  (  80.72,-139.58)    1.13                14
 12/21/2017   18:59:25   ( -80.72,  27.59) 12/21/2017   18:59:56  ( -80.72,  27.58)    0.40                31
 12/21/2017   19:50:05   (  80.71,-164.96) 12/21/2017   19:50:57  (  80.72,-164.96)    1.39                52