Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 11.  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)
 03/12/2025   14:03:23   (  70.47, -35.01) 03/12/2025   14:04:34  (  70.38, -34.43)   23.94                71
 03/12/2025   14:54:00   ( -70.12, 132.85) 03/12/2025   14:54:07  ( -70.10, 132.81)    2.94                 7
 03/12/2025   15:44:44   (  70.00, -59.66) 03/12/2025   15:43:34  (  69.99, -59.70)    1.80                70
 03/15/2025   06:20:13   (  70.23,  81.14) 03/15/2025   06:21:04  (  70.21,  81.21)    3.26                51
 03/15/2025   07:10:54   ( -70.08,-111.32) 03/15/2025   07:10:34  ( -70.10,-111.31)    1.84                20
 03/15/2025   08:01:22   (  69.12,  57.40) 03/15/2025   08:00:16  (  69.16,  55.06)   92.65                66
 03/17/2025   22:37:06   (  70.15,-162.97) 03/17/2025   22:37:31  (  70.17,-162.96)    1.50                25
 03/17/2025   23:27:48   ( -70.06,   4.49) 03/17/2025   23:27:01  ( -70.06,   4.52)    1.07                47
 03/20/2025   14:03:17   ( -70.35, 145.19) 03/20/2025   14:04:28  ( -70.31, 145.49)   12.08                71
 03/20/2025   14:53:59   (  70.14, -47.19) 03/20/2025   14:53:56  (  70.14, -47.11)    2.94                 3
 03/20/2025   15:44:40   ( -69.99, 120.37) 03/20/2025   15:43:27  ( -69.98, 120.30)    2.87                73
 03/23/2025   06:20:08   ( -70.19, -98.79) 03/23/2025   06:20:55  ( -70.19, -98.79)    0.73                47
 03/23/2025   07:10:52   (  70.09,  68.66) 03/23/2025   07:10:22  (  70.07,  68.69)    2.37                30