Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 12 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)
 12/04/2021   15:05:49   (  70.14, -50.35) 12/04/2021   15:07:00  (  70.10, -50.23)    6.37                71
 12/04/2021   15:56:30   ( -70.00, 117.17) 12/04/2021   15:56:30  ( -69.99, 117.25)    3.20                 0
 12/04/2021   16:47:11   (  69.72, -75.10) 12/04/2021   16:45:59  (  69.77, -75.41)   13.05                72
 12/07/2021   07:22:39   (  70.04,  65.58) 12/07/2021   07:23:29  (  70.04,  65.57)    0.59                50
 12/07/2021   08:13:21   ( -69.95,-126.97) 12/07/2021   08:12:59  ( -69.93,-126.95)    2.55                22
 12/07/2021   09:03:48   (  68.93,  41.81) 12/07/2021   09:02:42  (  68.94,  39.37)   97.57                66
 12/09/2021   23:39:31   (  69.99,-178.57) 12/09/2021   23:39:58  (  70.03,-178.57)    3.73                27
 12/10/2021   00:30:13   ( -69.91, -11.12) 12/10/2021   00:29:28  ( -69.92, -11.08)    2.28                45
 12/12/2021   15:05:46   ( -70.43, 129.23) 12/12/2021   15:06:57  ( -70.29, 130.04)   34.47                71
 12/12/2021   15:56:23   (  69.95, -62.72) 12/12/2021   15:56:28  (  69.95, -62.79)    2.65                 5
 12/12/2021   16:47:05   ( -69.86, 104.73) 12/12/2021   16:45:58  ( -69.85, 104.70)    1.65                67
 12/15/2021   07:22:32   ( -70.08,-114.44) 12/15/2021   07:23:30  ( -70.05,-114.43)    3.51                58
 12/15/2021   08:13:15   (  69.91,  53.12) 12/15/2021   08:12:57  (  69.93,  53.05)    3.12                18
 12/15/2021   09:03:46   ( -69.24,-138.58) 12/15/2021   09:02:37  ( -69.28,-140.19)   63.74                69
 12/17/2021   23:39:23   ( -70.04,   1.41) 12/17/2021   23:39:58  ( -70.01,   1.41)    2.57                35
 12/18/2021   00:30:06   (  69.88, 168.96) 12/18/2021   00:29:25  (  69.89, 168.89)    3.57                41