Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 12 27.  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)
 12/27/2024   21:47:21   ( -70.24,  29.48) 12/27/2024   21:48:22  ( -70.24,  29.55)    2.65                61
 12/27/2024   22:38:04   (  70.09,-162.98) 12/27/2024   22:37:50  (  70.09,-163.03)    2.03                14
 12/27/2024   23:28:37   ( -69.51,   5.19) 12/27/2024   23:27:27  ( -69.59,   3.91)   50.48                70
 12/30/2024   14:04:11   ( -70.22, 145.30) 12/30/2024   14:04:50  ( -70.21, 145.38)    3.13                39
 12/30/2024   14:54:54   (  70.07, -47.16) 12/30/2024   14:54:18  (  70.04, -47.20)    3.04                36
 01/02/2025   05:30:29   (  70.89,  92.69) 01/02/2025   05:31:37  (  70.77,  94.48)   66.45                68
 01/02/2025   06:20:59   ( -70.15, -98.82) 01/02/2025   06:21:16  ( -70.17, -98.78)    2.33                17
 01/02/2025   07:11:43   (  70.06,  68.64) 01/02/2025   07:10:43  (  70.06,  68.71)    2.64                60
 01/04/2025   21:47:06   (  70.21,-150.44) 01/04/2025   21:48:12  (  70.24,-150.41)    3.44                66
 01/04/2025   22:37:48   ( -70.11,  17.04) 01/04/2025   22:37:42  ( -70.14,  17.07)    3.07                 6
 01/04/2025   23:28:26   (  69.70,-175.03) 01/04/2025   23:27:14  (  69.75,-175.84)   31.48                72
 01/07/2025   14:03:55   (  70.18, -34.60) 01/07/2025   14:04:37  (  70.21, -34.57)    2.82                42
 01/07/2025   14:54:37   ( -70.08, 132.87) 01/07/2025   14:54:07  ( -70.10, 132.92)    2.73                30