Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 20.  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)
 12/21/2024   05:55:58   (  70.17,  87.44) 12/21/2024   05:56:43  (  70.17,  87.40)    1.59                45
 12/21/2024   06:46:40   ( -70.06,-105.08) 12/21/2024   06:46:13  ( -70.06,-105.13)    2.07                27
 12/23/2024   22:12:49   (  70.15,-156.75) 12/23/2024   22:13:12  (  70.13,-156.78)    2.90                23
 12/23/2024   23:03:31   ( -70.04,  10.73) 12/23/2024   23:02:42  ( -70.02,  10.70)    3.15                49
 12/26/2024   13:38:59   ( -70.39, 151.35) 12/26/2024   13:40:11  ( -70.31, 151.73)   16.69                72
 12/26/2024   14:29:39   (  70.09, -40.88) 12/26/2024   14:29:40  (  70.10, -40.94)    2.30                 1
 12/26/2024   15:20:21   ( -69.98, 126.61) 12/26/2024   15:19:10  ( -69.99, 126.54)    2.55                71
 12/29/2024   05:55:46   ( -70.19, -92.55) 12/29/2024   05:56:40  ( -70.19, -92.56)    0.46                54
 12/29/2024   06:46:30   (  70.10,  74.90) 12/29/2024   06:46:07  (  70.08,  74.93)    2.70                23
 12/29/2024   07:36:58   ( -69.25,-116.54) 12/29/2024   07:35:50  ( -69.26,-118.56)   79.74                68
 12/31/2024   22:12:35   ( -70.15,  23.29) 12/31/2024   22:13:06  ( -70.13,  23.25)    2.69                31
 12/31/2024   23:03:18   (  70.01,-169.19) 12/31/2024   23:02:33  (  70.02,-169.27)    3.05                45