Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 5 12.  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)    3.15                35
 05/13/2021   07:23:23   (  70.00,  65.58) 05/13/2021   07:22:42  (  70.00,  65.54)    1.48                41
 05/15/2021   21:59:01   (  70.63,-154.26) 05/15/2021   22:00:11  (  70.48,-153.16)   44.25                70
 05/15/2021   22:49:34   ( -70.07,  13.93) 05/15/2021   22:49:46  ( -70.09,  13.92)    2.95                12
 05/15/2021   23:40:19   (  70.00,-178.66) 05/15/2021   23:39:13  (  69.99,-178.59)    2.86                66
 05/18/2021   14:15:48   (  70.16, -37.75) 05/18/2021   14:16:48  (  70.14, -37.78)    2.23                60
 05/18/2021   15:06:30   ( -70.06, 129.70) 05/18/2021   15:06:18  ( -70.03, 129.70)    3.65                12
 05/18/2021   15:57:03   (  69.36, -61.96) 05/18/2021   15:55:54  (  69.43, -63.48)   60.19                69
 05/21/2021   06:32:42   (  70.10,  78.09) 05/21/2021   06:33:18  (  70.12,  78.08)    1.98                36
 05/21/2021   07:23:24   ( -70.01,-114.45) 05/21/2021   07:22:48  ( -70.02,-114.44)    1.08                36
 05/23/2021   21:59:05   ( -70.79,  25.45) 05/23/2021   22:00:14  ( -70.65,  27.09)   62.07                69
 05/23/2021   22:49:38   (  70.11,-166.15) 05/23/2021   22:49:49  (  70.10,-166.07)    3.05                11
 05/23/2021   23:40:19   ( -69.96,   1.39) 05/23/2021   23:39:20  ( -69.95,   1.34)    2.50                59
 05/26/2021   14:15:49   ( -70.17, 142.21) 05/26/2021   14:16:54  ( -70.14, 142.21)    3.55                65
 05/26/2021   15:06:32   (  70.01, -50.24) 05/26/2021   15:06:21  (  70.02, -50.31)    3.10                11
 05/26/2021   15:57:08   ( -69.59, 117.70) 05/26/2021   15:55:56  ( -69.65, 116.80)   35.35                72