Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 9.  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)
 12/10/2024   13:39:17   ( -70.23, 151.56) 12/10/2024   13:40:08  ( -70.20, 151.59)    3.01                51
 12/10/2024   14:30:00   (  70.09, -40.92) 12/10/2024   14:29:35  (  70.10, -40.92)    1.30                25
 12/10/2024   15:20:26   ( -69.13, 127.80) 12/10/2024   15:19:19  ( -69.21, 125.51)   90.98                67
 12/13/2024   05:05:42   (  71.12,  98.57) 12/13/2024   05:06:48  (  71.03, 101.11)   91.90                66
 12/13/2024   05:56:08   ( -70.16, -92.57) 12/13/2024   05:56:32  ( -70.15, -92.58)    1.55                24
 12/13/2024   06:46:50   (  70.02,  74.96) 12/13/2024   06:45:58  (  70.04,  74.91)    2.61                52
 12/15/2024   21:22:16   (  70.23,-144.21) 12/15/2024   21:23:24  (  70.21,-144.22)    2.79                68
 12/15/2024   22:12:58   ( -70.11,  23.29) 12/15/2024   22:12:54  ( -70.09,  23.25)    2.67                 4
 12/15/2024   23:03:36   (  69.71,-168.80) 12/15/2024   23:02:25  (  69.76,-169.57)   30.23                71
 12/18/2024   13:39:07   (  70.20, -28.38) 12/18/2024   13:39:45  (  70.20, -28.31)    2.62                38
 12/18/2024   14:29:49   ( -70.08, 139.12) 12/18/2024   14:29:15  ( -70.09, 139.16)    1.93                34
 12/21/2024   05:05:23   ( -70.74, -80.76) 12/21/2024   05:06:33  ( -70.59, -79.47)   50.45                70
 12/21/2024   05:55:57   (  70.14,  87.50) 12/21/2024   05:56:06  (  70.14,  87.52)    0.99                 9
 12/21/2024   06:46:39   ( -70.01,-105.00) 12/21/2024   06:45:36  ( -70.03,-105.00)    1.83                63