Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 11.  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)
 08/11/2025   14:03:39   ( -70.24, 145.20) 08/11/2025   14:04:51  ( -70.18, 145.37)    8.95                72
 08/11/2025   14:54:21   (  70.04, -47.20) 08/11/2025   14:54:19  (  70.03, -47.21)    1.93                 2
 08/11/2025   15:45:02   ( -69.87, 120.38) 08/11/2025   15:43:49  ( -69.91, 120.27)    6.09                73
 08/14/2025   06:20:31   ( -70.12, -98.86) 08/14/2025   06:21:21  ( -70.13, -98.82)    1.63                50
 08/14/2025   07:11:14   (  69.99,  68.66) 08/14/2025   07:10:49  (  69.97,  68.60)    2.94                25
 08/14/2025   08:01:40   ( -69.02,-122.63) 08/14/2025   08:00:33  ( -69.09,-124.96)   93.07                67
 08/16/2025   22:37:25   ( -70.07,  17.00) 08/16/2025   22:37:52  ( -70.06,  16.96)    1.68                27
 08/16/2025   23:28:08   (  69.94,-175.49) 08/16/2025   23:27:19  (  69.95,-175.55)    2.93                49
 08/19/2025   14:03:39   (  70.25, -34.83) 08/19/2025   14:04:51  (  70.18, -34.61)   11.06                72
 08/19/2025   14:54:19   ( -70.02, 132.84) 08/19/2025   14:54:22  ( -70.03, 132.79)    2.06                 3
 08/19/2025   15:45:02   (  69.89, -59.65) 08/19/2025   15:43:49  (  69.91, -59.72)    3.99                73
 08/22/2025   06:20:31   (  70.10,  81.17) 08/22/2025   06:21:21  (  70.13,  81.19)    2.57                50
 08/22/2025   07:11:14   ( -70.03,-111.40) 08/22/2025   07:10:51  ( -70.02,-111.33)    2.74                23
 08/22/2025   08:01:40   (  68.99,  57.41) 08/22/2025   08:00:34  (  69.03,  54.97)   97.12                66
 08/24/2025   22:37:24   (  70.07,-163.00) 08/24/2025   22:37:50  (  70.05,-163.04)    2.45                26
 08/24/2025   23:28:06   ( -69.94,   4.51) 08/24/2025   23:27:20  ( -69.95,   4.45)    2.78                46