Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 12 23.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2024   05:30:38   ( -70.64, -86.93) 12/25/2024   05:31:49  ( -70.51, -85.94)   39.28                71
 12/25/2024   06:21:14   (  70.12,  81.18) 12/25/2024   06:21:21  (  70.14,  81.16)    1.63                 7
 12/25/2024   07:11:56   ( -70.02,-111.34) 12/25/2024   07:10:51  ( -70.03,-111.37)    1.41                65
 12/27/2024   21:47:21   ( -70.22,  29.51) 12/27/2024   21:48:23  ( -70.21,  29.51)    0.73                62
 12/27/2024   22:38:05   (  70.13,-163.04) 12/27/2024   22:37:50  (  70.11,-163.00)    2.86                15
 12/27/2024   23:28:38   ( -69.55,   5.15) 12/27/2024   23:27:27  ( -69.61,   3.94)   47.21                71
 12/30/2024   14:04:10   ( -70.18, 145.35) 12/30/2024   14:04:50  ( -70.19, 145.36)    1.31                40
 12/30/2024   14:54:54   (  70.09, -47.20) 12/30/2024   14:54:17  (  70.08, -47.15)    2.20                37
 01/02/2025   05:30:30   (  70.90,  92.67) 01/02/2025   05:31:38  (  70.78,  94.49)   67.68                68
 01/02/2025   06:21:00   ( -70.16, -98.83) 01/02/2025   06:21:17  ( -70.18, -98.76)    3.54                17
 01/02/2025   07:11:43   (  70.02,  68.70) 01/02/2025   07:10:45  (  70.01,  68.64)    2.21                58
 01/04/2025   21:47:07   (  70.21,-150.43) 01/04/2025   21:48:14  (  70.23,-150.44)    2.37                67
 01/04/2025   22:37:49   ( -70.10,  17.05) 01/04/2025   22:37:44  ( -70.13,  17.05)    2.84                 5
 01/04/2025   23:28:27   (  69.69,-175.03) 01/04/2025   23:27:16  (  69.73,-175.86)   32.38                71