Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 2 21.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 02/22/2023   07:10:14   ( -70.10,-111.27) 02/22/2023   07:10:54  ( -70.09,-111.32)    1.97                40
 02/22/2023   08:00:58   (  69.98,  56.21) 02/22/2023   08:00:21  (  69.99,  56.18)    1.44                37
 02/24/2023   22:36:34   (  70.54,-163.51) 02/24/2023   22:37:45  (  70.42,-162.59)   36.84                71
 02/24/2023   23:27:09   ( -70.08,   4.53) 02/24/2023   23:27:19  ( -70.08,   4.56)    1.55                10
 02/25/2023   00:17:53   (  69.96, 172.01) 02/25/2023   00:16:46  (  69.98, 172.06)    2.83                67
 02/27/2023   14:53:20   (  70.11, -47.07) 02/27/2023   14:54:14  (  70.11, -47.15)    2.85                54
 02/27/2023   15:44:02   ( -70.01, 120.39) 02/27/2023   15:43:44  ( -69.99, 120.32)    3.55                18
 02/27/2023   16:34:31   (  69.10, -70.99) 02/27/2023   16:33:24  (  69.16, -73.15)   85.92                67
 03/02/2023   07:10:15   (  70.11,  68.69) 03/02/2023   07:10:38  (  70.09,  68.72)    2.51                23
 03/02/2023   08:00:56   ( -69.95,-123.76) 03/02/2023   08:00:08  ( -69.97,-123.81)    2.61                48
 03/04/2023   22:36:25   ( -70.17,  17.06) 03/04/2023   22:37:35  ( -70.15,  17.06)    2.18                70
 03/04/2023   23:27:09   (  70.06,-175.48) 03/04/2023   23:27:02  (  70.04,-175.45)    3.28                 7
 03/05/2023   00:17:47   ( -69.75,  -7.69) 03/05/2023   00:16:34  ( -69.81,  -8.13)   18.20                73