Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 7.  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)
 11/07/2025   14:53:18   ( -70.58, 132.28) 11/07/2025   14:54:28  ( -70.51, 133.45)   44.25                70
 11/07/2025   15:43:54   (  70.02, -59.53) 11/07/2025   15:44:02  (  70.02, -59.61)    2.95                 8
 11/07/2025   16:34:36   ( -69.95, 107.89) 11/07/2025   16:33:31  ( -69.97, 107.94)    2.63                65
 11/10/2025   07:10:10   ( -70.13,-111.25) 11/10/2025   07:11:02  ( -70.13,-111.21)    1.92                52
 11/10/2025   08:00:54   (  69.99,  56.26) 11/10/2025   08:00:30  (  69.97,  56.20)    2.71                24
 11/10/2025   08:51:20   ( -69.06,-135.08) 11/10/2025   08:50:13  ( -69.15,-137.28)   87.71                67
 11/12/2025   22:36:42   (  70.86,-164.01) 11/12/2025   22:37:50  (  70.77,-162.02)   73.28                68
 11/12/2025   23:27:10   ( -70.04,   4.62) 11/12/2025   23:27:31  ( -70.06,   4.57)    2.51                21
 11/13/2025   00:17:55   (  69.97, 172.04) 11/13/2025   00:16:58  (  69.95, 172.06)    1.92                57
 11/15/2025   14:53:29   (  70.12, -47.07) 11/15/2025   14:54:29  (  70.11, -47.10)    1.46                60
 11/15/2025   15:44:11   ( -70.03, 120.39) 11/15/2025   15:43:59  ( -70.01, 120.38)    2.25                12
 11/15/2025   16:34:44   (  69.32, -71.26) 11/15/2025   16:33:35  (  69.40, -72.81)   61.35                69
 11/18/2025   07:10:29   (  70.07,  68.76) 11/18/2025   07:10:56  (  70.09,  68.75)    2.10                27
 11/18/2025   08:01:11   ( -69.97,-123.77) 11/18/2025   08:00:26  ( -69.98,-123.76)    1.37                45
 11/20/2025   22:36:44   ( -70.14,  17.10) 11/20/2025   22:37:55  ( -70.15,  17.08)    1.08                71
 11/20/2025   23:27:28   (  70.03,-175.43) 11/20/2025   23:27:22  (  70.03,-175.44)    0.32                 6
 11/21/2025   00:18:07   ( -69.77,  -7.72) 11/21/2025   00:16:54  ( -69.82,  -8.10)   15.72                73