Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 12 22.  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)
 12/22/2024   14:04:24   (  70.16, -34.66) 12/22/2024   14:04:52  (  70.14, -34.71)    2.99                28
 12/22/2024   14:55:06   ( -70.06, 132.82) 12/22/2024   14:54:21  ( -70.09, 132.84)    3.30                45
 12/25/2024   05:30:39   ( -70.67, -86.98) 12/25/2024   05:31:49  ( -70.54, -85.90)   42.39                70
 12/25/2024   06:21:14   (  70.16,  81.14) 12/25/2024   06:21:20  (  70.16,  81.20)    2.50                 6
 12/25/2024   07:11:56   ( -70.05,-111.38) 12/25/2024   07:10:50  ( -70.05,-111.33)    2.28                66
 12/27/2024   21:47:20   ( -70.20,  29.54) 12/27/2024   21:48:23  ( -70.19,  29.48)    2.59                63
 12/27/2024   22:38:04   (  70.11,-163.01) 12/27/2024   22:37:50  (  70.09,-163.03)    2.66                14
 12/27/2024   23:28:37   ( -69.52,   5.18) 12/27/2024   23:27:27  ( -69.59,   3.92)   49.60                70
 12/30/2024   14:04:10   ( -70.16, 145.38) 12/30/2024   14:04:51  ( -70.18, 145.35)    2.77                41
 12/30/2024   14:54:54   (  70.07, -47.17) 12/30/2024   14:54:18  (  70.07, -47.17)    0.10                36
 01/02/2025   05:30:31   (  70.93,  92.62) 01/02/2025   05:31:39  (  70.78,  94.49)   70.32                68
 01/02/2025   06:21:00   ( -70.14, -98.80) 01/02/2025   06:21:19  ( -70.13, -98.84)    2.03                19
 01/02/2025   07:11:44   (  70.05,  68.65) 01/02/2025   07:10:45  (  70.07,  68.72)    3.34                59
 01/04/2025   21:47:08   (  70.24,-150.49) 01/04/2025   21:48:15  (  70.24,-150.42)    2.43                67
 01/04/2025   22:37:49   ( -70.13,  17.00) 01/04/2025   22:37:44  ( -70.14,  17.07)    2.66                 5
 01/04/2025   23:28:27   (  69.73,-175.08) 01/04/2025   23:27:15  (  69.80,-175.76)   27.74                72