Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 12 16.  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)
 12/17/2021   23:39:23   ( -70.04,   1.40) 12/17/2021   23:39:58  ( -70.04,   1.44)    1.33                35
 12/18/2021   00:30:07   (  69.92, 168.89) 12/18/2021   00:29:25  (  69.93, 168.93)    2.04                42
 12/20/2021   15:05:41   (  70.51, -50.87) 12/20/2021   15:06:51  (  70.44, -49.73)   42.96                70
 12/20/2021   15:56:15   ( -70.01, 117.24) 12/20/2021   15:56:27  ( -70.01, 117.27)    1.32                12
 12/20/2021   16:46:59   (  69.89, -75.27) 12/20/2021   16:45:54  (  69.90, -75.23)    1.97                65
 12/23/2021   07:22:25   (  70.06,  65.63) 12/23/2021   07:23:26  (  70.07,  65.62)    1.79                61
 12/23/2021   08:13:07   ( -69.97,-126.93) 12/23/2021   08:12:56  ( -69.97,-126.90)    1.21                11
 12/23/2021   09:03:41   (  69.32,  41.33) 12/23/2021   09:02:31  (  69.42,  39.99)   53.48                70
 12/25/2021   23:39:16   (  70.03,-178.55) 12/25/2021   23:39:54  (  70.03,-178.56)    0.68                38
 12/26/2021   00:29:58   ( -69.94, -11.09) 12/26/2021   00:29:24  ( -69.93, -11.07)    2.01                34
 12/28/2021   15:05:37   ( -70.80, 128.72) 12/28/2021   15:06:45  ( -70.69, 130.65)   71.71                68
 12/28/2021   15:56:08   (  70.00, -62.72) 12/28/2021   15:56:22  (  70.03, -62.68)    3.40                14
 12/28/2021   16:46:49   ( -69.86, 104.81) 12/28/2021   16:45:53  ( -69.88, 104.74)    3.27                56