Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 24.  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)
 08/24/2025   22:37:24   (  70.04,-162.96) 08/24/2025   22:37:51  (  70.05,-163.04)    3.23                27
 08/24/2025   23:28:07   ( -69.98,   4.45) 08/24/2025   23:27:20  ( -69.99,   4.51)    2.49                47
 08/27/2025   14:03:39   ( -70.36, 145.01) 08/27/2025   14:04:50  ( -70.29, 145.54)   21.29                71
 08/27/2025   14:54:18   (  70.01, -47.13) 08/27/2025   14:54:20  (  70.03, -47.19)    3.14                 2
 08/27/2025   15:45:01   ( -69.94, 120.28) 08/27/2025   15:43:50  ( -69.91, 120.28)    3.46                71
 08/30/2025   06:20:29   ( -70.12, -98.84) 08/30/2025   06:21:22  ( -70.09, -98.86)    3.33                53
 08/30/2025   07:11:12   (  69.98,  68.69) 08/30/2025   07:10:49  (  69.98,  68.63)    2.26                23
 08/30/2025   08:01:40   ( -69.12,-122.75) 08/30/2025   08:00:32  ( -69.16,-124.85)   83.26                68
 09/01/2025   22:37:22   ( -70.09,  16.98) 09/01/2025   22:37:49  ( -70.09,  17.02)    1.77                27
 09/01/2025   23:28:05   (  69.95,-175.50) 09/01/2025   23:27:16  (  69.98,-175.49)    3.02                49
 09/04/2025   14:03:35   (  70.24, -34.79) 09/04/2025   14:04:46  (  70.22, -34.53)   10.07                71
 09/04/2025   14:54:15   ( -70.02, 132.86) 09/04/2025   14:54:18  ( -70.01, 132.80)    2.58                 3
 09/04/2025   15:44:58   (  69.87, -59.61) 09/04/2025   15:43:45  (  69.90, -59.71)    4.66                73
 09/07/2025   06:20:27   (  70.11,  81.17) 09/07/2025   06:21:15  (  70.13,  81.23)    2.47                48
 09/07/2025   07:11:09   ( -70.00,-111.34) 09/07/2025   07:10:45  ( -70.02,-111.29)    3.25                24