Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 20.  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)
 08/22/2025   06:20:31   (  70.13,  81.14) 08/22/2025   06:21:21  (  70.12,  81.18)    1.57                50
 08/22/2025   07:11:13   ( -70.01,-111.37) 08/22/2025   07:10:51  ( -70.01,-111.35)    0.63                22
 08/22/2025   08:01:40   (  69.02,  57.38) 08/22/2025   08:00:33  (  69.08,  55.03)   93.38                67
 08/24/2025   22:37:25   (  70.09,-163.03) 08/24/2025   22:37:51  (  70.06,-163.03)    3.44                26
 08/24/2025   23:28:07   ( -69.97,   4.47) 08/24/2025   23:27:21  ( -69.95,   4.45)    2.41                46
 08/27/2025   14:03:39   ( -70.35, 145.03) 08/27/2025   14:04:51  ( -70.25, 145.48)   20.28                72
 08/27/2025   14:54:19   (  70.05, -47.21) 08/27/2025   14:54:20  (  70.03, -47.19)    2.78                 1
 08/27/2025   15:45:01   ( -69.93, 120.29) 08/27/2025   15:43:50  ( -69.92, 120.30)    1.12                71
 08/30/2025   06:20:28   ( -70.11, -98.83) 08/30/2025   06:21:21  ( -70.10, -98.85)    1.38                53
 08/30/2025   07:11:11   (  69.97,  68.69) 08/30/2025   07:10:48  (  69.99,  68.64)    2.62                23
 08/30/2025   08:01:39   ( -69.11,-122.74) 08/30/2025   08:00:31  ( -69.17,-124.84)   83.34                68
 09/01/2025   22:37:22   ( -70.08,  16.99) 09/01/2025   22:37:49  ( -70.10,  17.04)    2.29                27
 09/01/2025   23:28:05   (  69.95,-175.50) 09/01/2025   23:27:17  (  69.93,-175.56)    3.31                48