Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 22.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 09/24/2025   14:28:43   (  70.11, -40.89) 09/24/2025   14:29:49  (  70.10, -40.93)    1.73                66
 09/24/2025   15:19:24   ( -69.98, 126.62) 09/24/2025   15:19:19  ( -69.99, 126.55)    3.08                 5
 09/24/2025   16:10:02   (  69.53, -65.40) 09/24/2025   16:08:51  (  69.61, -66.33)   37.09                71
 09/27/2025   06:45:36   (  70.10,  74.90) 09/27/2025   06:46:19  (  70.09,  74.94)    1.63                43
 09/27/2025   07:36:17   ( -69.98,-117.59) 09/27/2025   07:35:49  ( -69.98,-117.58)    0.77                28
 09/29/2025   22:12:01   ( -71.07,  21.81) 09/29/2025   22:13:07  ( -70.98,  24.50)   97.73                66
 09/29/2025   23:02:28   (  70.05,-169.24) 09/29/2025   23:02:49  (  70.06,-169.23)    0.65                21
 09/29/2025   23:53:09   ( -69.93,  -1.73) 09/29/2025   23:52:19  ( -69.95,  -1.75)    2.58                50
 10/02/2025   14:28:37   ( -70.25, 138.94) 10/02/2025   14:29:49  ( -70.21, 139.23)   11.50                72
 10/02/2025   15:19:19   (  70.01, -53.39) 10/02/2025   15:19:18  (  69.99, -53.44)    2.88                 1
 10/02/2025   16:10:00   ( -69.89, 114.11) 10/02/2025   16:08:48  ( -69.89, 114.04)    2.67                72
 10/05/2025   06:45:27   ( -70.11,-105.06) 10/05/2025   06:46:19  ( -70.12,-105.02)    2.09                52
 10/05/2025   07:36:11   (  69.97,  62.44) 10/05/2025   07:35:46  (  70.00,  62.46)    3.29                25