Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 10.  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, 151.55) 12/10/2024   13:40:11  ( -70.21, 151.59)    2.63                54
 12/10/2024   14:30:00   (  70.09, -40.92) 12/10/2024   14:29:38  (  70.11, -40.91)    2.95                22
 12/10/2024   15:20:29   ( -69.29, 127.57) 12/10/2024   15:19:20  ( -69.34, 125.67)   74.92                69
 12/13/2024   05:56:08   ( -70.17, -92.57) 12/13/2024   05:56:43  ( -70.18, -92.59)    1.29                35
 12/13/2024   06:46:52   (  70.08,  74.87) 12/13/2024   06:46:10  (  70.07,  74.91)    1.48                42
 12/15/2024   21:22:26   (  70.76,-145.05) 12/15/2024   21:23:35  (  70.68,-143.60)   53.92                69
 12/15/2024   22:12:58   ( -70.12,  23.28) 12/15/2024   22:13:13  ( -70.13,  23.22)    2.86                15
 12/15/2024   23:03:42   (  70.03,-169.28) 12/15/2024   23:02:40  (  70.03,-169.28)    0.51                62
 12/18/2024   13:39:07   (  70.20, -28.39) 12/18/2024   13:40:13  (  70.20, -28.44)    2.18                66
 12/18/2024   14:29:49   ( -70.09, 139.11) 12/18/2024   14:29:43  ( -70.09, 139.04)    2.64                 6
 12/18/2024   15:20:26   (  69.63, -52.90) 12/18/2024   15:19:15  (  69.70, -53.85)   37.53                71
 12/21/2024   05:55:58   (  70.19,  87.41) 12/21/2024   05:56:41  (  70.20,  87.45)    1.74                43
 12/21/2024   06:46:40   ( -70.07,-105.09) 12/21/2024   06:46:11  ( -70.10,-105.07)    2.87                29
 12/23/2024   21:22:22   ( -71.16,  34.31) 12/23/2024   21:23:28  ( -71.02,  36.93)   95.74                66
 12/23/2024   22:12:48   (  70.14,-156.73) 12/23/2024   22:13:09  (  70.15,-156.74)    0.67                21
 12/23/2024   23:03:30   ( -70.02,  10.77) 12/23/2024   23:02:39  ( -70.04,  10.75)    2.66                51