Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 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)
 05/23/2025   14:03:04   ( -70.27, 145.31) 05/23/2025   14:04:16  ( -70.24, 145.46)    6.52                72
 05/23/2025   14:53:47   (  70.08, -47.10) 05/23/2025   14:53:44  (  70.09, -47.12)    0.87                 3
 05/23/2025   15:44:28   ( -69.95, 120.41) 05/23/2025   15:43:14  ( -69.97, 120.36)    3.07                74
 05/26/2025   06:20:00   ( -70.18, -98.80) 05/26/2025   06:20:47  ( -70.17, -98.75)    1.77                47
 05/26/2025   07:10:44   (  70.04,  68.71) 05/26/2025   07:10:14  (  70.07,  68.74)    3.19                30
 05/28/2025   21:46:28   (  70.96,-151.61) 05/28/2025   21:47:35  (  70.85,-149.49)   78.11                67
 05/28/2025   22:36:55   ( -70.10,  17.09) 05/28/2025   22:37:17  ( -70.09,  17.01)    3.01                22
 05/28/2025   23:27:40   (  70.01,-175.48) 05/28/2025   23:26:43  (  70.04,-175.42)    3.49                57
 05/31/2025   14:03:11   (  70.20, -34.63) 05/31/2025   14:04:16  (  70.20, -34.58)    1.93                65
 05/31/2025   14:53:52   ( -70.07, 132.89) 05/31/2025   14:53:46  ( -70.10, 132.91)    2.95                 6
 05/31/2025   15:44:30   (  69.62, -59.13) 05/31/2025   15:43:19  (  69.66, -60.07)   36.41                71
 06/03/2025   06:20:07   (  70.13,  81.24) 06/03/2025   06:20:46  (  70.13,  81.21)    1.25                39
 06/03/2025   07:10:49   ( -70.05,-111.33) 06/03/2025   07:10:16  ( -70.03,-111.30)    2.72                33