Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 11.  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)
 10/13/2025   06:45:18   (  70.13,  74.94) 10/13/2025   06:46:24  (  70.12,  74.96)    1.07                66
 10/13/2025   07:35:59   ( -70.02,-117.57) 10/13/2025   07:35:54  ( -70.01,-117.56)    1.23                 5
 10/13/2025   08:26:37   (  69.55,  50.43) 10/13/2025   08:25:26  (  69.63,  49.55)   34.80                71
 10/15/2025   23:02:09   (  70.10,-169.23) 10/15/2025   23:02:54  (  70.11,-169.18)    1.80                45
 10/15/2025   23:52:50   ( -69.99,  -1.74) 10/15/2025   23:52:24  ( -70.00,  -1.70)    1.77                26
 10/18/2025   15:18:59   (  70.09, -53.42) 10/18/2025   15:19:23  (  70.06, -53.36)    3.31                24
 10/18/2025   16:09:40   ( -69.97, 114.08) 10/18/2025   16:08:53  ( -69.96, 114.13)    2.52                47
 10/21/2025   06:45:11   ( -70.48,-105.54) 10/21/2025   06:46:22  ( -70.33,-104.74)   34.25                71
 10/21/2025   07:35:49   (  70.03,  62.47) 10/21/2025   07:35:52  (  70.05,  62.50)    3.00                 3
 10/21/2025   08:26:30   ( -69.91,-130.04) 10/21/2025   08:25:23  ( -69.89,-130.08)    2.41                67
 10/23/2025   23:01:55   ( -70.11,  10.83) 10/23/2025   23:02:54  ( -70.13,  10.85)    2.41                59
 10/23/2025   23:52:40   (  70.03, 178.26) 10/23/2025   23:52:21  (  70.01, 178.33)    3.52                19