Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 5.  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)
 09/07/2025   06:20:26   (  70.11,  81.18) 09/07/2025   06:21:25  (  70.14,  81.19)    2.66                59
 09/07/2025   07:11:08   ( -70.01,-111.35) 09/07/2025   07:10:55  ( -70.02,-111.34)    1.14                13
 09/07/2025   08:01:41   (  69.32,  56.97) 09/07/2025   08:00:32  (  69.37,  55.41)   61.46                69
 09/09/2025   22:37:19   (  70.07,-162.97) 09/09/2025   22:37:55  (  70.07,-163.02)    1.80                36
 09/09/2025   23:28:01   ( -69.97,   4.49) 09/09/2025   23:27:25  ( -69.96,   4.46)    1.49                36
 09/12/2025   14:03:39   ( -70.71, 144.47) 09/12/2025   14:04:48  ( -70.63, 146.04)   58.47                69
 09/12/2025   14:54:12   (  70.03, -47.14) 09/12/2025   14:54:24  (  70.03, -47.19)    1.78                12
 09/12/2025   15:44:54   ( -69.93, 120.32) 09/12/2025   15:43:54  ( -69.93, 120.29)    1.35                60
 09/15/2025   06:20:20   ( -70.11, -98.79) 09/15/2025   06:21:24  ( -70.13, -98.81)    2.43                64
 09/15/2025   07:11:04   (  70.00,  68.68) 09/15/2025   07:10:51  (  70.02,  68.68)    1.92                13
 09/15/2025   08:01:38   ( -69.48,-123.24) 09/15/2025   08:00:27  ( -69.58,-124.29)   42.41                71
 09/17/2025   22:37:13   ( -70.09,  17.01) 09/17/2025   22:37:52  ( -70.09,  17.02)    0.56                39
 09/17/2025   23:27:57   (  69.98,-175.51) 09/17/2025   23:27:19  (  69.97,-175.49)    1.29                38