Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 29.  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)
 05/31/2025   14:03:11   (  70.20, -34.62) 05/31/2025   14:04:16  (  70.19, -34.60)    1.44                65
 05/31/2025   14:53:52   ( -70.08, 132.88) 05/31/2025   14:53:46  ( -70.07, 132.87)    0.86                 6
 05/31/2025   15:44:30   (  69.62, -59.13) 05/31/2025   15:43:19  (  69.64, -60.09)   37.30                71
 06/03/2025   06:20:07   (  70.12,  81.25) 06/03/2025   06:20:46  (  70.11,  81.18)    3.14                39
 06/03/2025   07:10:49   ( -70.05,-111.33) 06/03/2025   07:10:15  ( -70.05,-111.27)    2.23                34
 06/05/2025   21:46:30   ( -70.77,  28.68) 06/05/2025   21:47:39  ( -70.67,  30.24)   58.39                69
 06/05/2025   22:37:04   (  70.10,-162.96) 06/05/2025   22:37:14  (  70.12,-162.92)    2.78                10
 06/05/2025   23:27:45   ( -69.98,   4.54) 06/05/2025   23:26:45  ( -69.96,   4.49)    3.31                60
 06/08/2025   14:03:16   ( -70.18, 145.38) 06/08/2025   14:04:16  ( -70.17, 145.40)    0.80                60
 06/08/2025   14:54:00   (  70.04, -47.09) 06/08/2025   14:53:43  (  70.06, -47.12)    2.78                17
 06/08/2025   15:44:32   ( -69.44, 121.10) 06/08/2025   15:43:22  ( -69.46, 119.69)   55.23                70
 06/11/2025   06:20:11   ( -70.11, -98.76) 06/11/2025   06:20:44  ( -70.09, -98.82)    3.43                33
 06/11/2025   07:10:56   (  70.03,  68.68) 06/11/2025   07:10:10  (  70.03,  68.74)    2.22                46