Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 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)
 10/27/2025   22:36:43   (  70.93,-164.13) 10/27/2025   22:37:50  (  70.86,-161.88)   82.02                67
 10/27/2025   23:27:09   ( -70.09,   4.55) 10/27/2025   23:27:31  ( -70.09,   4.61)    2.63                22
 10/28/2025   00:17:53   (  69.94, 172.07) 10/28/2025   00:16:59  (  69.94, 172.04)    1.46                54
 10/30/2025   14:53:20   (  70.28, -47.28) 10/30/2025   14:54:31  (  70.22, -46.97)   13.47                71
 10/30/2025   15:43:59   ( -70.06, 120.38) 10/30/2025   15:44:02  ( -70.05, 120.43)    2.07                 3
 10/30/2025   16:34:43   (  69.92, -72.10) 10/30/2025   16:33:30  (  69.89, -72.15)    3.38                73
 11/02/2025   07:10:07   (  70.11,  68.78) 11/02/2025   07:11:03  (  70.09,  68.73)    2.51                56
 11/02/2025   08:00:48   ( -69.99,-123.72) 11/02/2025   08:00:33  ( -69.99,-123.79)    2.49                15
 11/02/2025   08:51:19   (  69.16,  44.79) 11/02/2025   08:50:11  (  69.27,  42.88)   76.02                68
 11/04/2025   23:26:57   (  70.11,-175.42) 11/04/2025   23:27:32  (  70.10,-175.37)    1.91                35
 11/05/2025   00:17:38   ( -69.98,  -7.91) 11/05/2025   00:17:02  ( -70.00,  -7.89)    2.23                36
 11/07/2025   14:53:16   ( -70.91, 131.77) 11/07/2025   14:54:23  ( -70.80, 133.89)   78.28                67
 11/07/2025   15:43:45   (  70.06, -59.56) 11/07/2025   15:44:00  (  70.08, -59.52)    2.80                15
 11/07/2025   16:34:26   ( -69.93, 107.96) 11/07/2025   16:33:31  ( -69.93, 107.89)    2.54                55
 11/10/2025   07:09:50   ( -70.14,-111.19) 11/10/2025   07:11:02  ( -70.15,-111.18)    1.54                72
 11/10/2025   08:00:34   (  70.03,  56.29) 11/10/2025   08:00:29  (  70.04,  56.30)    0.94                 5
 11/10/2025   08:51:14   ( -69.84,-136.10) 11/10/2025   08:50:00  ( -69.88,-136.29)    8.70                74