Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 23.  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)
 08/24/2025   22:37:25   (  70.09,-163.03) 08/24/2025   22:37:51  (  70.06,-163.02)    2.39                26
 08/24/2025   23:28:07   ( -69.97,   4.46) 08/24/2025   23:27:21  ( -69.95,   4.45)    2.38                46
 08/27/2025   14:03:39   ( -70.35, 145.03) 08/27/2025   14:04:51  ( -70.26, 145.49)   20.03                72
 08/27/2025   14:54:19   (  70.05, -47.20) 08/27/2025   14:54:20  (  70.04, -47.17)    1.26                 1
 08/27/2025   15:45:01   ( -69.93, 120.29) 08/27/2025   15:43:50  ( -69.93, 120.31)    0.50                71
 08/30/2025   06:20:28   ( -70.10, -98.82) 08/30/2025   06:21:21  ( -70.12, -98.83)    1.29                53
 08/30/2025   07:11:12   (  70.02,  68.63) 08/30/2025   07:10:48  (  70.01,  68.67)    1.81                24
 08/30/2025   08:01:39   ( -69.10,-122.74) 08/30/2025   08:00:31  ( -69.18,-124.82)   82.97                68
 09/01/2025   22:37:22   ( -70.07,  17.00) 09/01/2025   22:37:50  ( -70.07,  16.99)    0.70                28
 09/01/2025   23:28:05   (  69.93,-175.48) 09/01/2025   23:27:17  (  69.96,-175.52)    3.09                48
 09/04/2025   14:03:36   (  70.27, -34.85) 09/04/2025   14:04:47  (  70.22, -34.53)   13.09                71
 09/04/2025   14:54:16   ( -70.05, 132.81) 09/04/2025   14:54:18  ( -70.06, 132.87)    2.74                 2
 09/04/2025   15:44:59   (  69.91, -59.66) 09/04/2025   15:43:46  (  69.89, -59.72)    2.61                73