Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 1 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)
 01/05/2021   06:32:36   ( -71.04,-103.41) 01/05/2021   06:33:42  ( -70.90,-100.80)   95.81                66
 01/05/2021   07:23:03   (  70.03,  65.53) 01/05/2021   07:23:23  (  70.04,  65.56)    1.30                20
 01/05/2021   08:13:44   ( -69.90,-126.95) 01/05/2021   08:12:53  ( -69.92,-126.96)    3.07                51
 01/07/2021   22:49:13   ( -70.07,  13.93) 01/07/2021   22:50:25  ( -70.08,  13.87)    2.62                72
 01/07/2021   23:39:57   (  69.95,-178.58) 01/07/2021   23:39:52  (  69.98,-178.64)    3.33                 5
 01/08/2021   00:30:36   ( -69.71, -10.90) 01/08/2021   00:29:24  ( -69.76, -11.31)   16.79                72
 01/10/2021   15:06:07   ( -70.05, 129.74) 01/10/2021   15:06:52  ( -70.08, 129.74)    3.24                45
 01/10/2021   15:56:52   (  69.98, -62.85) 01/10/2021   15:56:19  (  69.96, -62.77)    3.69                33
 01/13/2021   06:32:33   (  70.80,  77.00) 01/13/2021   06:33:41  (  70.66,  78.85)   69.39                68
 01/13/2021   07:23:02   ( -70.02,-114.45) 01/13/2021   07:23:21  ( -70.01,-114.47)    1.89                19
 01/13/2021   08:13:46   (  69.91,  53.03) 01/13/2021   08:12:48  (  69.89,  53.01)    1.87                58
 01/15/2021   22:49:15   (  70.10,-166.11) 01/15/2021   22:50:19  (  70.09,-166.10)    0.71                64
 01/15/2021   23:39:57   ( -70.00,   1.36) 01/15/2021   23:39:49  ( -69.99,   1.39)    1.63                 8
 01/16/2021   00:30:33   (  69.47, 169.46) 01/16/2021   00:29:22  (  69.54, 168.42)   41.47                71