Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 13.  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)
 08/14/2025   06:20:32   ( -70.13, -98.87) 08/14/2025   06:21:22  ( -70.12, -98.83)    1.49                50
 08/14/2025   07:11:15   (  69.99,  68.66) 08/14/2025   07:10:50  (  69.97,  68.59)    3.37                25
 08/14/2025   08:01:40   ( -69.02,-122.63) 08/14/2025   08:00:33  ( -69.09,-124.97)   93.01                67
 08/16/2025   22:37:25   ( -70.08,  16.99) 08/16/2025   22:37:52  ( -70.06,  16.95)    2.23                27
 08/16/2025   23:28:08   (  69.94,-175.49) 08/16/2025   23:27:19  (  69.95,-175.55)    2.67                49
 08/19/2025   14:03:39   (  70.26, -34.83) 08/19/2025   14:04:51  (  70.19, -34.61)   11.12                72
 08/19/2025   14:54:19   ( -70.03, 132.83) 08/19/2025   14:54:22  ( -70.03, 132.80)    1.53                 3
 08/19/2025   15:45:02   (  69.89, -59.65) 08/19/2025   15:43:49  (  69.92, -59.71)    4.07                73
 08/22/2025   06:20:31   (  70.11,  81.17) 08/22/2025   06:21:22  (  70.09,  81.13)    2.62                51
 08/22/2025   07:11:13   ( -69.98,-111.33) 08/22/2025   07:10:52  ( -69.98,-111.39)    2.31                21
 08/22/2025   08:01:40   (  69.00,  57.40) 08/22/2025   08:00:34  (  69.04,  54.99)   96.21                66
 08/24/2025   22:37:25   (  70.07,-163.00) 08/24/2025   22:37:51  (  70.08,-163.00)    0.73                26
 08/24/2025   23:28:08   ( -70.00,   4.43) 08/24/2025   23:27:21  ( -69.97,   4.48)    3.27                47
 08/27/2025   14:03:39   ( -70.38, 144.98) 08/27/2025   14:04:50  ( -70.27, 145.52)   23.11                71
 08/27/2025   14:54:18   (  70.04, -47.18) 08/27/2025   14:54:19  (  70.05, -47.16)    1.42                 1
 08/27/2025   15:45:00   ( -69.91, 120.33) 08/27/2025   15:43:50  ( -69.89, 120.26)    3.37                70