Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 12 9.  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)
 12/09/2021   23:39:31   (  69.98,-178.54) 12/09/2021   23:39:59  (  69.99,-178.62)    3.35                28
 12/10/2021   00:30:13   ( -69.90, -11.10) 12/10/2021   00:29:29  ( -69.88, -11.14)    2.11                44
 12/12/2021   15:05:46   ( -70.42, 129.24) 12/12/2021   15:06:57  ( -70.31, 130.06)   33.47                71
 12/12/2021   15:56:24   (  69.99, -62.78) 12/12/2021   15:56:28  (  69.98, -62.76)    1.58                 4
 12/12/2021   16:47:05   ( -69.85, 104.74) 12/12/2021   16:45:58  ( -69.87, 104.72)    2.01                67
 12/15/2021   07:22:31   ( -70.07,-114.43) 12/15/2021   07:23:29  ( -70.07,-114.40)    1.11                58
 12/15/2021   08:13:15   (  69.95,  53.06) 12/15/2021   08:12:56  (  69.96,  53.09)    1.35                19
 12/15/2021   09:03:45   ( -69.23,-138.57) 12/15/2021   09:02:36  ( -69.30,-140.16)   63.24                69
 12/17/2021   23:39:23   ( -70.03,   1.41) 12/17/2021   23:39:58  ( -70.05,   1.45)    2.03                35
 12/18/2021   00:30:07   (  69.92, 168.89) 12/18/2021   00:29:25  (  69.93, 168.94)    2.15                42
 12/20/2021   15:05:41   (  70.51, -50.87) 12/20/2021   15:06:51  (  70.45, -49.72)   43.36                70
 12/20/2021   15:56:15   ( -70.00, 117.25) 12/20/2021   15:56:27  ( -70.02, 117.29)    2.57                12
 12/20/2021   16:46:59   (  69.89, -75.27) 12/20/2021   16:45:54  (  69.90, -75.22)    2.38                65