Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 7 9.  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)
 07/10/2021   21:59:17   ( -71.06,  24.94) 07/10/2021   22:00:23  ( -70.92,  27.53)   95.08                66
 07/10/2021   22:49:44   (  70.05,-166.14) 07/10/2021   22:50:04  (  70.06,-166.11)    1.52                20
 07/10/2021   23:40:26   ( -69.96,   1.32) 07/10/2021   23:39:34  ( -69.95,   1.37)    2.52                52
 07/13/2021   14:15:55   ( -70.15, 142.17) 07/13/2021   14:17:07  ( -70.12, 142.21)    3.65                72
 07/13/2021   15:06:38   (  69.98, -50.27) 07/13/2021   15:06:34  (  70.01, -50.29)    3.27                 4
 07/13/2021   15:57:18   ( -69.78, 117.35) 07/13/2021   15:56:05  ( -69.85, 117.11)   11.62                73
 07/16/2021   06:32:49   ( -70.08,-101.95) 07/16/2021   06:33:37  ( -70.07,-101.97)    1.28                48
 07/16/2021   07:23:33   (  69.97,  65.53) 07/16/2021   07:23:04  (  69.96,  65.52)    1.00                29
 07/18/2021   21:59:16   (  70.95,-154.89) 07/18/2021   22:00:23  (  70.83,-152.60)   84.48                67
 07/18/2021   22:49:43   ( -70.06,  13.85) 07/18/2021   22:50:05  ( -70.07,  13.91)    2.83                22
 07/18/2021   23:40:26   (  69.90,-178.60) 07/18/2021   23:39:33  (  69.90,-178.68)    2.93                53
 07/21/2021   14:15:55   (  70.09, -37.75) 07/21/2021   14:17:05  (  70.11, -37.78)    2.59                70
 07/21/2021   15:06:37   ( -69.99, 129.72) 07/21/2021   15:06:35  ( -70.01, 129.72)    2.76                 2
 07/21/2021   15:57:17   (  69.67, -62.50) 07/21/2021   15:56:05  (  69.73, -63.03)   21.64                72