Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 29.  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)
 12/01/2025   14:53:59   (  70.07, -47.10) 12/01/2025   14:54:32  (  70.09, -47.16)    2.97                33
 12/01/2025   15:44:41   ( -69.96, 120.38) 12/01/2025   15:44:02  ( -69.98, 120.31)    2.93                39
 12/04/2025   06:20:19   ( -70.38, -99.14) 12/04/2025   06:21:31  ( -70.27, -98.66)   21.59                72
 12/04/2025   07:10:59   (  70.07,  68.65) 12/04/2025   07:11:00  (  70.05,  68.67)    2.47                 1
 12/04/2025   08:01:41   ( -69.95,-123.86) 12/04/2025   08:00:30  ( -69.94,-123.85)    1.71                71
 12/06/2025   22:37:14   ( -70.12,  17.02) 12/06/2025   22:38:01  ( -70.10,  16.99)    2.34                47
 12/06/2025   23:27:57   (  69.97,-175.45) 12/06/2025   23:27:28  (  69.99,-175.53)    3.48                29
 12/09/2025   14:03:40   (  70.73, -35.50) 12/09/2025   14:04:49  (  70.62, -34.00)   56.61                69
 12/09/2025   14:54:12   ( -70.07, 132.85) 12/09/2025   14:54:27  ( -70.07, 132.84)    0.41                15
 12/09/2025   15:44:55   (  69.93, -59.63) 12/09/2025   15:43:54  (  69.96, -59.68)    3.16                61
 12/12/2025   06:20:28   (  70.12,  81.22) 12/12/2025   06:21:24  (  70.13,  81.17)    2.26                56
 12/12/2025   07:11:11   ( -70.04,-111.34) 12/12/2025   07:10:54  ( -70.02,-111.34)    1.59                17
 12/12/2025   08:01:41   (  69.21,  57.18) 12/12/2025   08:00:33  (  69.24,  55.24)   76.37                68