Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 4 21.  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)
 04/21/2021   21:58:59   ( -71.08,  25.06) 04/21/2021   22:00:06  ( -70.96,  27.44)   87.36                67
 04/21/2021   22:49:27   (  70.12,-166.08) 04/21/2021   22:49:46  (  70.14,-166.12)    2.91                19
 04/21/2021   23:40:09   ( -70.04,   1.36) 04/21/2021   23:39:16  ( -70.03,   1.35)    1.18                53
 04/24/2021   14:15:39   ( -70.23, 142.22) 04/24/2021   14:16:47  ( -70.23, 142.23)    0.73                68
 04/24/2021   15:06:23   (  70.10, -50.29) 04/24/2021   15:06:14  (  70.12, -50.27)    2.09                 9
 04/24/2021   15:57:00   ( -69.75, 117.55) 04/24/2021   15:55:48  ( -69.79, 116.90)   25.54                72
 04/27/2021   06:32:35   ( -70.21,-101.99) 04/27/2021   06:33:15  ( -70.20,-101.92)    2.57                40
 04/27/2021   07:23:19   (  70.09,  65.50) 04/27/2021   07:22:42  (  70.09,  65.56)    2.50                37
 04/29/2021   21:58:57   (  70.70,-154.33) 04/29/2021   22:00:07  (  70.61,-153.09)   46.97                70
 04/29/2021   22:49:30   ( -70.14,  13.88) 04/29/2021   22:49:44  ( -70.12,  13.83)    2.58                14
 04/29/2021   23:40:14   (  70.02,-178.63) 04/29/2021   23:39:11  (  70.00,-178.68)    2.45                63
 05/02/2021   14:15:43   (  70.21, -37.80) 05/02/2021   14:16:40  (  70.24, -37.75)    3.25                57
 05/02/2021   15:06:25   ( -70.12, 129.67) 05/02/2021   15:06:10  ( -70.14, 129.74)    3.37                15
 05/02/2021   15:56:57   (  69.37, -61.92) 05/02/2021   15:55:48  (  69.41, -63.61)   66.44                69