Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 5 20.  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)
 05/21/2021   06:32:43   (  70.12,  78.06) 05/21/2021   06:33:19  (  70.10,  78.05)    2.49                36
 05/21/2021   07:23:24   ( -69.99,-114.41) 05/21/2021   07:22:49  ( -69.99,-114.48)    2.53                35
 05/23/2021   21:59:05   ( -70.77,  25.49) 05/23/2021   22:00:14  ( -70.67,  27.12)   60.87                69
 05/23/2021   22:49:38   (  70.08,-166.10) 05/23/2021   22:49:50  (  70.08,-166.10)    0.69                12
 05/23/2021   23:40:20   ( -69.99,   1.35) 05/23/2021   23:39:20  ( -69.97,   1.38)    1.97                60
 05/26/2021   14:15:48   ( -70.14, 142.25) 05/26/2021   14:16:53  ( -70.16, 142.25)    2.16                65
 05/26/2021   15:06:32   (  70.03, -50.27) 05/26/2021   15:06:20  (  70.06, -50.26)    3.14                12
 05/26/2021   15:57:07   ( -69.57, 117.74) 05/26/2021   15:55:56  ( -69.62, 116.77)   38.11                71
 05/29/2021   06:32:44   ( -70.15,-101.99) 05/29/2021   06:33:24  ( -70.14,-101.91)    3.21                40
 05/29/2021   07:23:27   (  69.98,  65.57) 05/29/2021   07:22:52  (  69.97,  65.50)    2.78                35
 05/31/2021   21:59:08   (  70.78,-154.55) 05/31/2021   22:00:16  (  70.70,-152.83)   63.60                68
 05/31/2021   22:49:39   ( -70.10,  13.85) 05/31/2021   22:49:55  ( -70.11,  13.92)    3.03                16
 05/31/2021   23:40:22   (  69.94,-178.60) 05/31/2021   23:39:23  (  69.94,-178.67)    2.36                59
 06/03/2021   14:15:52   (  70.16, -37.80) 06/03/2021   14:16:56  (  70.17, -37.73)    2.69                64
 06/03/2021   15:06:34   ( -70.06, 129.68) 06/03/2021   15:06:26  ( -70.07, 129.75)    3.30                 8
 06/03/2021   15:57:10   (  69.53, -62.23) 06/03/2021   15:55:59  (  69.63, -63.22)   39.89                71