Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2017 12 7.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2017   22:36:38   (  70.71,-163.69) 12/08/2017   22:37:47  (  70.58,-162.31)   52.99                69
 12/08/2017   23:27:05   ( -70.09,   4.63) 12/08/2017   23:27:24  ( -70.08,   4.60)    1.60                19
 12/09/2017   00:17:44   (  69.96, 172.16) 12/09/2017   00:16:51  (  69.98, 172.10)    3.10                53
 12/11/2017   19:00:36   ( -70.14,  71.19) 12/11/2017   19:01:38  ( -70.14,  71.12)    2.95                62
 12/11/2017   19:51:16   (  70.07,-121.37) 12/11/2017   19:51:05  (  70.04,-121.39)    3.41                11
 12/11/2017   20:41:49   ( -69.75,  46.44) 12/11/2017   20:40:37  ( -69.82,  45.94)   20.51                72
 12/14/2017   15:24:47   (  70.12, -54.82) 12/14/2017   15:25:18  (  70.14, -54.80)    2.78                31
 12/14/2017   16:15:24   ( -70.01, 112.69) 12/14/2017   16:14:48  ( -70.04, 112.68)    3.30                36
 12/17/2017   10:58:19   (  70.28,  11.57) 12/17/2017   10:59:30  (  70.24,  11.78)    8.97                71
 12/17/2017   11:48:55   ( -70.10, 179.17) 12/17/2017   11:49:01  ( -70.09, 179.19)    2.29                 6
 12/17/2017   12:39:34   (  70.00, -13.34) 12/17/2017   12:38:28  (  69.97, -13.32)    2.84                66
 12/20/2017   07:22:26   ( -70.15,-114.27) 12/20/2017   07:23:15  ( -70.13,-114.31)    2.72                49
 12/20/2017   08:13:05   (  70.05,  53.21) 12/20/2017   08:12:41  (  70.07,  53.25)    2.54                24
 12/20/2017   09:03:31   ( -69.34,-138.41) 12/20/2017   09:02:22  ( -69.36,-140.08)   65.61                69