Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 9 12.  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   14:28:18   ( -70.15, 139.22) 09/13/2024   14:29:23  ( -70.17, 139.18)    3.06                65
 09/13/2024   15:19:03   (  70.07, -53.36) 09/13/2024   15:18:50  (  70.07, -53.32)    1.51                13
 09/13/2024   16:09:37   ( -69.56, 114.72) 09/13/2024   16:08:26  ( -69.63, 113.70)   40.15                71
 09/16/2024   06:45:20   ( -70.14,-105.03) 09/16/2024   06:45:53  ( -70.12,-105.00)    2.43                33
 09/16/2024   07:36:04   (  70.02,  62.48) 09/16/2024   07:35:20  (  70.02,  62.49)    0.50                44
 09/18/2024   22:11:39   (  70.21,-156.69) 09/18/2024   22:12:51  (  70.20,-156.64)    2.07                72
 09/18/2024   23:02:19   ( -70.07,  10.85) 09/18/2024   23:02:20  ( -70.09,  10.84)    2.67                 1
 09/18/2024   23:53:01   (  69.83, 178.51) 09/18/2024   23:51:49  (  69.87, 178.17)   13.39                72
 09/21/2024   14:28:37   (  70.10, -40.78) 09/21/2024   14:29:17  (  70.12, -40.85)    3.30                40
 09/21/2024   15:19:19   ( -70.02, 126.67) 09/21/2024   15:18:47  ( -70.01, 126.63)    1.72                32
 09/24/2024   05:54:59   ( -70.52, -92.99) 09/24/2024   05:56:10  ( -70.45, -92.12)   33.57                71
 09/24/2024   06:45:37   (  70.09,  75.01) 09/24/2024   06:45:41  (  70.11,  75.04)    2.89                 4
 09/24/2024   07:36:19   ( -70.00,-117.54) 09/24/2024   07:35:11  ( -70.01,-117.47)    2.67                68