Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 9 4.  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)
 09/04/2021   23:40:22   (  69.94,-178.67) 09/04/2021   23:39:53  (  69.93,-178.67)    0.96                29
 09/07/2021   14:16:06   (  70.95, -39.14) 09/07/2021   14:17:12  (  70.90, -36.64)   90.88                66
 09/07/2021   15:06:32   ( -70.02, 129.65) 09/07/2021   15:06:56  ( -70.02, 129.69)    1.52                24
 09/07/2021   15:57:16   (  69.90, -62.85) 09/07/2021   15:56:23  (  69.92, -62.81)    2.23                53
 09/10/2021   06:32:45   (  70.13,  77.95) 09/10/2021   06:33:56  (  70.11,  78.07)    4.93                71
 09/10/2021   07:23:26   ( -69.99,-114.52) 09/10/2021   07:23:26  ( -70.01,-114.45)    3.46                 0
 09/10/2021   08:14:08   (  69.76,  53.12) 09/10/2021   08:12:55  (  69.79,  52.89)    9.27                73
 09/12/2021   22:49:38   (  70.05,-166.15) 09/12/2021   22:50:27  (  70.04,-166.15)    0.70                49
 09/12/2021   23:40:20   ( -69.96,   1.30) 09/12/2021   23:39:57  ( -69.93,   1.33)    2.58                23
 09/15/2021   15:06:31   (  70.02, -50.34) 09/15/2021   15:06:56  (  70.01, -50.31)    1.04                25
 09/15/2021   15:57:13   ( -69.92, 117.12) 09/15/2021   15:56:26  ( -69.91, 117.18)    2.52                47
 09/18/2021   06:32:45   ( -70.31,-102.32) 09/18/2021   06:33:57  ( -70.21,-101.80)   22.50                72
 09/18/2021   07:23:25   (  69.99,  65.48) 09/18/2021   07:23:26  (  69.98,  65.53)    2.03                 1
 09/18/2021   08:14:06   ( -69.84,-126.98) 09/18/2021   08:12:57  ( -69.83,-127.05)    3.02                69