Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 5 18.  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)
 05/18/2021   14:15:47   (  70.14, -37.73) 05/18/2021   14:16:47  (  70.15, -37.76)    1.86                60
 05/18/2021   15:06:29   ( -70.06, 129.72) 05/18/2021   15:06:17  ( -70.04, 129.72)    1.65                12
 05/18/2021   15:57:03   (  69.40, -62.01) 05/18/2021   15:55:53  (  69.44, -63.46)   56.96                70
 05/21/2021   06:32:43   (  70.14,  78.03) 05/21/2021   06:33:18  (  70.14,  78.10)    2.62                35
 05/21/2021   07:23:24   ( -70.00,-114.44) 05/21/2021   07:22:48  ( -70.03,-114.42)    3.02                36
 05/23/2021   21:59:05   ( -70.79,  25.46) 05/23/2021   22:00:14  ( -70.66,  27.10)   61.74                69
 05/23/2021   22:49:38   (  70.10,-166.13) 05/23/2021   22:49:50  (  70.06,-166.13)    3.58                12
 05/23/2021   23:40:19   ( -69.95,   1.41) 05/23/2021   23:39:20  ( -69.96,   1.35)    2.05                59
 05/26/2021   14:15:49   ( -70.16, 142.22) 05/26/2021   14:16:54  ( -70.15, 142.23)    1.59                65
 05/26/2021   15:06:33   (  70.05, -50.30) 05/26/2021   15:06:21  (  70.04, -50.28)    1.50                12
 05/26/2021   15:57:08   ( -69.59, 117.71) 05/26/2021   15:55:56  ( -69.66, 116.82)   35.38                72
 05/29/2021   06:32:43   ( -70.12,-101.94) 05/29/2021   06:33:24  ( -70.12,-101.93)    0.62                41
 05/29/2021   07:23:27   (  70.01,  65.53) 05/29/2021   07:22:51  (  70.01,  65.55)    0.98                36
 05/31/2021   21:59:08   (  70.81,-154.60) 05/31/2021   22:00:16  (  70.68,-152.86)   65.29                68
 05/31/2021   22:49:38   ( -70.08,  13.89) 05/31/2021   22:49:55  ( -70.09,  13.90)    1.78                17
 05/31/2021   23:40:22   (  69.97,-178.65) 05/31/2021   23:39:22  (  69.98,-178.61)    1.45                60