Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 14.  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)
 08/16/2025   22:37:25   ( -70.09,  16.97) 08/16/2025   22:37:51  ( -70.10,  17.01)    2.18                26
 08/16/2025   23:28:08   (  69.95,-175.51) 08/16/2025   23:27:19  (  69.94,-175.57)    2.21                49
 08/19/2025   14:03:39   (  70.27, -34.85) 08/19/2025   14:04:50  (  70.24, -34.54)   12.15                71
 08/19/2025   14:54:19   ( -70.04, 132.81) 08/19/2025   14:54:22  ( -70.02, 132.78)    2.91                 3
 08/19/2025   15:45:02   (  69.90, -59.67) 08/19/2025   15:43:49  (  69.91, -59.73)    2.33                73
 08/22/2025   06:20:31   (  70.12,  81.15) 08/22/2025   06:21:21  (  70.13,  81.19)    2.00                50
 08/22/2025   07:11:13   ( -70.00,-111.35) 08/22/2025   07:10:51  ( -70.03,-111.33)    3.38                22
 08/22/2025   08:01:40   (  69.01,  57.39) 08/22/2025   08:00:34  (  69.03,  54.98)   96.03                66
 08/24/2025   22:37:25   (  70.08,-163.02) 08/24/2025   22:37:51  (  70.07,-163.02)    2.00                26
 08/24/2025   23:28:07   ( -69.96,   4.48) 08/24/2025   23:27:21  ( -69.96,   4.47)    0.80                46
 08/27/2025   14:03:38   ( -70.34, 145.04) 08/27/2025   14:04:50  ( -70.26, 145.50)   19.28                72
 08/27/2025   14:54:18   (  70.05, -47.20) 08/27/2025   14:54:19  (  70.04, -47.17)    1.83                 1
 08/27/2025   15:45:00   ( -69.92, 120.31) 08/27/2025   15:43:49  ( -69.94, 120.32)    1.39                71