Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 4.  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)
 05/04/2025   22:36:34   (  70.20,-162.96) 05/04/2025   22:37:10  (  70.21,-162.95)    1.10                36
 05/04/2025   23:27:16   ( -70.10,   4.52) 05/04/2025   23:26:40  ( -70.09,   4.52)    0.60                36
 05/07/2025   14:02:55   ( -70.70, 144.69) 05/07/2025   14:04:05  ( -70.57, 145.81)   43.83                70
 05/07/2025   14:53:31   (  70.17, -47.16) 05/07/2025   14:53:37  (  70.19, -47.09)    3.33                 6
 05/07/2025   15:44:13   ( -70.07, 120.31) 05/07/2025   15:43:07  ( -70.08, 120.38)    2.68                66
 05/10/2025   06:19:45   ( -70.27, -98.86) 05/10/2025   06:20:38  ( -70.25, -98.78)    3.64                53
 05/10/2025   07:10:28   (  70.10,  68.70) 05/10/2025   07:10:06  (  70.09,  68.64)    3.15                22
 05/10/2025   08:00:56   ( -69.26,-122.75) 05/10/2025   07:59:48  ( -69.31,-124.78)   80.26                68
 05/12/2025   21:46:16   (  71.15,-151.86) 05/12/2025   21:47:22  (  71.04,-149.33)   91.64                66
 05/12/2025   22:36:41   ( -70.15,  17.07) 05/12/2025   22:37:06  ( -70.17,  16.99)    3.30                25
 05/12/2025   23:27:25   (  70.04,-175.45) 05/12/2025   23:26:33  (  70.06,-175.52)    2.93                52
 05/15/2025   14:02:57   (  70.26, -34.65) 05/15/2025   14:04:02  (  70.27, -34.61)    1.78                65
 05/15/2025   14:53:39   ( -70.16, 132.82) 05/15/2025   14:53:32  ( -70.16, 132.87)    1.82                 7
 05/15/2025   15:44:16   (  69.68, -59.14) 05/15/2025   15:43:05  (  69.72, -60.11)   37.41                71