Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and LANDSAT-8
TLE Epoch: 2021 1 5.  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)
 01/05/2021   06:32:35   ( -71.01,-103.34) 01/05/2021   06:33:41  ( -70.94,-100.74)   94.62                66
 01/05/2021   07:23:03   (  70.04,  65.51) 01/05/2021   07:23:23  (  70.02,  65.54)    2.69                20
 01/05/2021   08:13:44   ( -69.91,-126.97) 01/05/2021   08:12:53  ( -69.91,-126.98)    0.60                51
 01/07/2021   22:49:13   ( -70.09,  13.91) 01/07/2021   22:50:25  ( -70.07,  13.85)    3.19                72
 01/07/2021   23:39:57   (  69.97,-178.60) 01/07/2021   23:39:52  (  69.96,-178.66)    2.33                 5
 01/08/2021   00:30:36   ( -69.72, -10.92) 01/08/2021   00:29:23  ( -69.80, -11.25)   15.36                73
 01/10/2021   15:06:08   ( -70.06, 129.72) 01/10/2021   15:06:53  ( -70.06, 129.72)    0.08                45
 01/10/2021   15:56:52   (  69.94, -62.79) 01/10/2021   15:56:20  (  69.95, -62.79)    1.15                32
 01/13/2021   06:32:32   (  70.76,  77.07) 01/13/2021   06:33:40  (  70.70,  78.91)   67.96                68
 01/13/2021   07:23:02   ( -70.04,-114.47) 01/13/2021   07:23:20  ( -70.05,-114.41)    2.54                18
 01/13/2021   08:13:46   (  69.92,  53.01) 01/13/2021   08:12:47  (  69.94,  53.08)    2.96                59
 01/15/2021   22:49:15   (  70.11,-166.13) 01/15/2021   22:50:19  (  70.08,-166.12)    3.36                64
 01/15/2021   23:39:56   ( -69.96,   1.41) 01/15/2021   23:39:49  ( -69.98,   1.37)    2.28                 7
 01/16/2021   00:30:33   (  69.48, 169.44) 01/16/2021   00:29:22  (  69.53, 168.40)   40.71                71
 01/18/2021   15:06:09   (  70.05, -50.25) 01/18/2021   15:06:47  (  70.06, -50.27)    1.58                38
 01/18/2021   15:56:51   ( -69.95, 117.21) 01/18/2021   15:56:17  ( -69.96, 117.22)    1.06                34