Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 9 13.  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)
 09/13/2024   14:28:19   ( -70.19, 139.16) 09/13/2024   14:29:23  ( -70.19, 139.21)    1.81                64
 09/13/2024   15:19:03   (  70.06, -53.34) 09/13/2024   15:18:51  (  70.03, -53.37)    3.14                12
 09/13/2024   16:09:37   ( -69.55, 114.74) 09/13/2024   16:08:26  ( -69.65, 113.72)   40.89                71
 09/16/2024   06:45:18   ( -70.10,-104.96) 09/16/2024   06:45:52  ( -70.12,-105.01)    2.26                34
 09/16/2024   07:36:03   (  70.03,  62.46) 09/16/2024   07:35:19  (  70.01,  62.48)    2.44                44
 09/18/2024   22:11:38   (  70.26,-156.77) 09/18/2024   22:12:48  (  70.26,-156.55)    8.35                70
 09/18/2024   23:02:18   ( -70.07,  10.84) 09/18/2024   23:02:19  ( -70.09,  10.85)    2.30                 1
 09/18/2024   23:53:00   (  69.84, 178.50) 09/18/2024   23:51:48  (  69.87, 178.18)   12.82                72
 09/21/2024   14:28:35   (  70.12, -40.79) 09/21/2024   14:29:15  (  70.11, -40.85)    2.29                40
 09/21/2024   15:19:17   ( -70.03, 126.66) 09/21/2024   15:18:45  ( -70.01, 126.63)    3.12                32
 09/24/2024   05:54:56   ( -70.57, -93.04) 09/24/2024   05:56:07  ( -70.42, -92.14)   37.52                71
 09/24/2024   06:45:33   (  70.08,  75.03) 09/24/2024   06:45:38  (  70.08,  75.01)    0.88                 5
 09/24/2024   07:36:15   ( -69.99,-117.52) 09/24/2024   07:35:08  ( -69.97,-117.50)    2.34                67
 09/26/2024   22:11:45   ( -70.16,  23.38) 09/26/2024   22:12:31  ( -70.16,  23.40)    1.19                46
 09/26/2024   23:02:29   (  70.04,-169.13) 09/26/2024   23:01:58  (  70.04,-169.13)    0.26                31