Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 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)
 12/13/2024   05:56:08   ( -70.17, -92.57) 12/13/2024   05:56:43  ( -70.18, -92.59)    1.17                35
 12/13/2024   06:46:52   (  70.08,  74.87) 12/13/2024   06:46:10  (  70.08,  74.91)    1.38                42
 12/15/2024   21:22:27   (  70.80,-145.12) 12/15/2024   21:23:36  (  70.66,-143.64)   56.43                69
 12/15/2024   22:12:59   ( -70.16,  23.21) 12/15/2024   22:13:13  ( -70.16,  23.26)    1.80                14
 12/15/2024   23:03:42   (  70.02,-169.26) 12/15/2024   23:02:41  (  70.00,-169.32)    2.79                61
 12/18/2024   13:39:08   (  70.23, -28.43) 12/18/2024   13:40:14  (  70.22, -28.42)    1.43                66
 12/18/2024   14:29:50   ( -70.11, 139.07) 12/18/2024   14:29:44  ( -70.11, 139.06)    0.59                 6
 12/18/2024   15:20:27   (  69.66, -52.94) 12/18/2024   15:19:16  (  69.72, -53.83)   35.20                71
 12/21/2024   05:55:59   (  70.19,  87.41) 12/21/2024   05:56:44  (  70.17,  87.40)    2.20                45
 12/21/2024   06:46:41   ( -70.08,-105.10) 12/21/2024   06:46:14  ( -70.07,-105.12)    1.14                27
 12/23/2024   22:12:50   (  70.17,-156.77) 12/23/2024   22:13:13  (  70.15,-156.76)    2.66                23
 12/23/2024   23:03:32   ( -70.05,  10.72) 12/23/2024   23:02:43  ( -70.04,  10.73)    0.97                49
 12/26/2024   13:39:00   ( -70.45, 151.26) 12/26/2024   13:40:11  ( -70.36, 151.79)   22.05                71
 12/26/2024   14:29:39   (  70.10, -40.89) 12/26/2024   14:29:40  (  70.13, -40.89)    3.40                 1
 12/26/2024   15:20:22   ( -70.04, 126.53) 12/26/2024   15:19:10  ( -70.03, 126.60)    2.96                72