Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 26.  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)
 07/26/2025   14:03:36   ( -70.13, 145.36) 07/26/2025   14:04:44  ( -70.12, 145.30)    2.43                68
 07/26/2025   14:54:20   (  70.03, -47.17) 07/26/2025   14:54:11  (  70.02, -47.20)    1.28                 9
 07/26/2025   15:44:57   ( -69.66, 120.69) 07/26/2025   15:43:45  ( -69.69, 119.97)   27.98                72
 07/29/2025   06:20:30   ( -70.09, -98.81) 07/29/2025   06:21:13  ( -70.08, -98.88)    3.12                43
 07/29/2025   07:11:14   (  70.00,  68.65) 07/29/2025   07:10:40  (  69.97,  68.62)    3.03                34
 07/31/2025   21:46:54   (  70.76,-151.41) 07/31/2025   21:48:03  (  70.67,-149.76)   61.21                69
 07/31/2025   22:37:25   ( -70.06,  17.01) 07/31/2025   22:37:42  ( -70.07,  16.99)    1.17                17
 07/31/2025   23:28:09   (  69.97,-175.54) 07/31/2025   23:27:09  (  69.96,-175.52)    1.59                60
 08/03/2025   14:03:38   (  70.15, -34.68) 08/03/2025   14:04:41  (  70.14, -34.65)    1.59                63
 08/03/2025   14:54:20   ( -70.03, 132.82) 08/03/2025   14:54:11  ( -70.04, 132.84)    1.06                 9
 08/03/2025   15:44:55   (  69.47, -59.03) 08/03/2025   15:43:45  (  69.54, -60.21)   46.38                70
 08/06/2025   06:20:32   (  70.08,  81.20) 08/06/2025   06:21:10  (  70.09,  81.17)    1.85                38
 08/06/2025   07:11:15   ( -70.01,-111.37) 08/06/2025   07:10:40  ( -69.99,-111.34)    1.94                35
 08/08/2025   21:46:53   ( -70.72,  28.66) 08/08/2025   21:48:02  ( -70.63,  30.20)   57.59                69
 08/08/2025   22:37:26   (  70.07,-163.00) 08/08/2025   22:37:37  (  70.08,-162.96)    2.10                11
 08/08/2025   23:28:08   ( -69.93,   4.51) 08/08/2025   23:27:08  ( -69.92,   4.45)    2.53                60