Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 9 9.  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)
 09/09/2025   22:37:19   (  70.09,-163.01) 09/09/2025   22:37:54  (  70.11,-162.97)    2.43                35
 09/09/2025   23:28:01   ( -69.99,   4.45) 09/09/2025   23:27:24  ( -69.99,   4.50)    1.69                37
 09/12/2025   14:03:39   ( -70.73, 144.44) 09/12/2025   14:04:48  ( -70.63, 146.03)   59.70                69
 09/12/2025   14:54:12   (  70.05, -47.17) 09/12/2025   14:54:24  (  70.03, -47.19)    1.69                12
 09/12/2025   15:44:54   ( -69.95, 120.29) 09/12/2025   15:43:54  ( -69.92, 120.28)    3.59                60
 09/15/2025   06:20:21   ( -70.12, -98.81) 09/15/2025   06:21:26  ( -70.10, -98.85)    2.42                65
 09/15/2025   07:11:05   (  70.01,  68.67) 09/15/2025   07:10:53  (  70.00,  68.64)    1.60                12
 09/15/2025   08:01:40   ( -69.55,-123.33) 09/15/2025   08:00:28  ( -69.61,-124.26)   36.64                72
 09/17/2025   22:37:14   ( -70.09,  17.01) 09/17/2025   22:37:54  ( -70.11,  17.04)    2.16                40
 09/17/2025   23:27:58   (  69.98,-175.51) 09/17/2025   23:27:21  (  70.00,-175.47)    2.68                37
 09/20/2025   14:03:35   (  70.74, -35.55) 09/20/2025   14:04:43  (  70.64, -33.93)   60.61                68
 09/20/2025   14:54:06   ( -70.07, 132.83) 09/20/2025   14:54:22  ( -70.04, 132.83)    3.16                16
 09/20/2025   15:44:50   (  69.95, -59.69) 09/20/2025   15:43:49  (  69.93, -59.68)    3.02                61
 09/23/2025   06:20:17   (  70.14,  81.18) 09/23/2025   06:21:20  (  70.11,  81.19)    3.09                63
 09/23/2025   07:10:58   ( -70.00,-111.29) 09/23/2025   07:10:50  ( -70.01,-111.33)    1.88                 8
 09/23/2025   08:01:34   (  69.46,  56.82) 09/23/2025   08:00:24  (  69.50,  55.63)   46.75                70