Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 5 11.  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)
 05/13/2021   06:32:39   ( -70.13,-101.92) 05/13/2021   06:33:14  ( -70.15,-101.88)    2.95                35
 05/13/2021   07:23:23   (  70.01,  65.57) 05/13/2021   07:22:42  (  69.99,  65.54)    1.95                41
 05/15/2021   21:59:01   (  70.63,-154.27) 05/15/2021   22:00:11  (  70.48,-153.16)   44.40                70
 05/15/2021   22:49:34   ( -70.07,  13.93) 05/15/2021   22:49:46  ( -70.10,  13.92)    3.01                12
 05/15/2021   23:40:19   (  70.00,-178.66) 05/15/2021   23:39:13  (  69.99,-178.59)    3.04                66
 05/18/2021   14:15:48   (  70.15, -37.75) 05/18/2021   14:16:48  (  70.14, -37.78)    2.11                60
 05/18/2021   15:06:30   ( -70.06, 129.71) 05/18/2021   15:06:18  ( -70.03, 129.71)    3.07                12
 05/18/2021   15:57:03   (  69.36, -61.95) 05/18/2021   15:55:54  (  69.43, -63.48)   60.24                69
 05/21/2021   06:32:42   (  70.10,  78.10) 05/21/2021   06:33:18  (  70.13,  78.08)    2.89                36
 05/21/2021   07:23:24   ( -70.00,-114.44) 05/21/2021   07:22:48  ( -70.02,-114.43)    2.29                36
 05/23/2021   21:59:05   ( -70.78,  25.47) 05/23/2021   22:00:14  ( -70.66,  27.10)   61.35                69
 05/23/2021   22:49:38   (  70.10,-166.14) 05/23/2021   22:49:49  (  70.11,-166.06)    2.95                11
 05/23/2021   23:40:19   ( -69.95,   1.41) 05/23/2021   23:39:20  ( -69.95,   1.35)    2.46                59