Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 28.  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)
 10/30/2025   14:53:20   (  70.27, -47.27) 10/30/2025   14:54:31  (  70.23, -46.96)   12.93                71
 10/30/2025   15:43:59   ( -70.05, 120.39) 10/30/2025   15:44:02  ( -70.06, 120.44)    2.17                 3
 10/30/2025   16:34:43   (  69.92, -72.10) 10/30/2025   16:33:30  (  69.90, -72.14)    2.30                73
 11/02/2025   07:10:07   (  70.10,  68.79) 11/02/2025   07:11:03  (  70.10,  68.74)    1.76                56
 11/02/2025   08:00:48   ( -69.99,-123.71) 11/02/2025   08:00:33  ( -69.99,-123.78)    2.51                15
 11/02/2025   08:51:20   (  69.21,  44.72) 11/02/2025   08:50:12  (  69.22,  42.82)   74.93                68
 11/04/2025   23:26:57   (  70.10,-175.42) 11/04/2025   23:27:32  (  70.11,-175.36)    2.16                35
 11/05/2025   00:17:38   ( -69.98,  -7.91) 11/05/2025   00:17:02  ( -70.01,  -7.88)    3.23                36
 11/07/2025   14:53:15   ( -70.91, 131.77) 11/07/2025   14:54:22  ( -70.80, 133.90)   78.43                67
 11/07/2025   15:43:45   (  70.06, -59.56) 11/07/2025   15:44:01  (  70.04, -59.59)    2.96                16
 11/07/2025   16:34:26   ( -69.93, 107.96) 11/07/2025   16:33:31  ( -69.93, 107.90)    2.31                55
 11/10/2025   07:09:51   ( -70.19,-111.27) 11/10/2025   07:11:02  ( -70.16,-111.17)    5.18                71
 11/10/2025   08:00:34   (  70.03,  56.29) 11/10/2025   08:00:29  (  70.04,  56.31)    1.84                 5
 11/10/2025   08:51:14   ( -69.84,-136.10) 11/10/2025   08:50:00  ( -69.89,-136.28)    8.79                74