Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 19.  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)
 08/19/2025   14:03:39   (  70.26, -34.84) 08/19/2025   14:04:51  (  70.19, -34.61)   11.33                72
 08/19/2025   14:54:19   ( -70.03, 132.82) 08/19/2025   14:54:22  ( -70.02, 132.78)    2.13                 3
 08/19/2025   15:45:02   (  69.89, -59.65) 08/19/2025   15:43:49  (  69.92, -59.72)    3.78                73
 08/22/2025   06:20:31   (  70.11,  81.17) 08/22/2025   06:21:22  (  70.09,  81.13)    2.68                51
 08/22/2025   07:11:13   ( -69.99,-111.34) 08/22/2025   07:10:52  ( -69.98,-111.40)    2.68                21
 08/22/2025   08:01:40   (  69.00,  57.40) 08/22/2025   08:00:34  (  69.04,  54.99)   96.25                66
 08/24/2025   22:37:25   (  70.07,-163.00) 08/24/2025   22:37:51  (  70.08,-163.00)    1.32                26
 08/24/2025   23:28:07   ( -69.95,   4.50) 08/24/2025   23:27:21  ( -69.97,   4.48)    2.86                46
 08/27/2025   14:03:39   ( -70.38, 144.98) 08/27/2025   14:04:50  ( -70.28, 145.52)   23.16                71
 08/27/2025   14:54:18   (  70.03, -47.17) 08/27/2025   14:54:19  (  70.06, -47.15)    2.89                 1
 08/27/2025   15:45:00   ( -69.91, 120.33) 08/27/2025   15:43:50  ( -69.90, 120.26)    3.02                70
 08/30/2025   06:20:29   ( -70.14, -98.87) 08/30/2025   06:21:21  ( -70.13, -98.80)    2.58                52
 08/30/2025   07:11:12   (  70.00,  68.65) 08/30/2025   07:10:48  (  70.02,  68.68)    2.38                24
 08/30/2025   08:01:39   ( -69.08,-122.71) 08/30/2025   08:00:32  ( -69.14,-124.87)   85.97                67
 09/01/2025   22:37:22   ( -70.06,  17.03) 09/01/2025   22:37:50  ( -70.08,  17.01)    2.71                28
 09/01/2025   23:28:06   (  69.97,-175.54) 09/01/2025   23:27:17  (  69.96,-175.50)    1.54                49