Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 4 3.  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)
 04/03/2021   06:32:25   (  70.21,  78.09) 04/03/2021   06:33:24  (  70.23,  78.14)    3.18                59
 04/03/2021   07:23:07   ( -70.12,-114.46) 04/03/2021   07:22:54  ( -70.12,-114.38)    3.01                13
 04/03/2021   08:13:40   (  69.41,  53.89) 04/03/2021   08:12:31  (  69.46,  52.36)   60.24                69
 04/05/2021   22:49:21   (  70.17,-166.09) 04/05/2021   22:49:53  (  70.18,-166.04)    2.45                32
 04/05/2021   23:40:02   ( -70.09,   1.36) 04/05/2021   23:39:22  ( -70.08,   1.44)    3.22                40
 04/08/2021   14:15:39   ( -70.62, 141.64) 04/08/2021   14:16:49  ( -70.52, 142.68)   40.01                70
 04/08/2021   15:06:16   (  70.14, -50.28) 04/08/2021   15:06:21  (  70.14, -50.23)    1.88                 5
 04/08/2021   15:56:57   ( -70.00, 117.25) 04/08/2021   15:55:51  ( -70.03, 117.25)    3.62                66
 04/11/2021   06:32:27   ( -70.17,-101.88) 04/11/2021   06:33:23  ( -70.20,-101.91)    3.04                56
 04/11/2021   07:23:12   (  70.11,  65.52) 04/11/2021   07:22:50  (  70.08,  65.57)    3.25                22
 04/11/2021   08:13:40   ( -69.28,-125.94) 04/11/2021   08:12:32  ( -69.32,-127.84)   74.98                68
 04/13/2021   22:49:23   ( -70.14,  13.93) 04/13/2021   22:49:52  ( -70.14,  13.89)    1.50                29
 04/13/2021   23:40:07   (  70.03,-178.59) 04/13/2021   23:39:19  (  70.03,-178.63)    1.61                48
 04/16/2021   14:15:38   (  70.26, -37.82) 04/16/2021   14:16:50  (  70.24, -37.73)    4.17                72
 04/16/2021   15:06:19   ( -70.11, 129.73) 04/16/2021   15:06:20  ( -70.14, 129.76)    3.14                 1
 04/16/2021   15:57:00   (  69.90, -62.63) 04/16/2021   15:55:48  (  69.91, -62.92)   11.08                72