Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 3.  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)
 09/04/2025   14:03:41   (  70.54, -35.27) 09/04/2025   14:04:51  (  70.44, -34.26)   39.20                70
 09/04/2025   14:54:15   ( -70.07, 132.79) 09/04/2025   14:54:25  ( -70.05, 132.82)    2.33                10
 09/04/2025   15:44:59   (  69.96, -59.75) 09/04/2025   15:43:52  (  69.95, -59.68)    3.23                67
 09/07/2025   06:20:26   (  70.12,  81.17) 09/07/2025   06:21:25  (  70.13,  81.18)    1.00                59
 09/07/2025   07:11:08   ( -70.01,-111.36) 09/07/2025   07:10:55  ( -70.01,-111.35)    0.23                13
 09/07/2025   08:01:41   (  69.33,  56.96) 09/07/2025   08:00:32  (  69.36,  55.40)   61.49                69
 09/09/2025   22:37:19   (  70.07,-162.99) 09/09/2025   22:37:55  (  70.05,-163.04)    2.99                36
 09/09/2025   23:28:01   ( -69.97,   4.49) 09/09/2025   23:27:25  ( -69.95,   4.44)    3.39                36
 09/12/2025   14:03:39   ( -70.72, 144.46) 09/12/2025   14:04:48  ( -70.61, 146.01)   58.30                69
 09/12/2025   14:54:12   (  70.04, -47.16) 09/12/2025   14:54:23  (  70.06, -47.15)    2.05                11
 09/12/2025   15:44:54   ( -69.94, 120.31) 09/12/2025   15:43:53  ( -69.95, 120.33)    1.62                61
 09/15/2025   06:20:21   ( -70.12, -98.81) 09/15/2025   06:21:24  ( -70.14, -98.79)    2.37                63
 09/15/2025   07:11:04   (  70.02,  68.66) 09/15/2025   07:10:50  (  70.03,  68.70)    1.89                14
 09/15/2025   08:01:38   ( -69.50,-123.25) 09/15/2025   08:00:27  ( -69.54,-124.35)   42.76                71