Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 8 20.  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)
 08/22/2025   06:20:31   (  70.11,  81.16) 08/22/2025   06:21:21  (  70.14,  81.20)    3.28                50
 08/22/2025   07:11:13   ( -70.00,-111.35) 08/22/2025   07:10:51  ( -70.03,-111.33)    3.40                22
 08/22/2025   08:01:40   (  69.00,  57.40) 08/22/2025   08:00:34  (  69.04,  54.98)   96.20                66
 08/24/2025   22:37:25   (  70.07,-163.01) 08/24/2025   22:37:51  (  70.08,-163.01)    0.28                26
 08/24/2025   23:28:07   ( -69.95,   4.49) 08/24/2025   23:27:21  ( -69.96,   4.47)    1.44                46
 08/27/2025   14:03:38   ( -70.33, 145.05) 08/27/2025   14:04:50  ( -70.27, 145.51)   18.42                72
 08/27/2025   14:54:18   (  70.04, -47.18) 08/27/2025   14:54:19  (  70.05, -47.16)    1.72                 1
 08/27/2025   15:45:00   ( -69.92, 120.32) 08/27/2025   15:43:49  ( -69.94, 120.32)    2.87                71
 08/30/2025   06:20:29   ( -70.14, -98.88) 08/30/2025   06:21:21  ( -70.12, -98.82)    3.18                52
 08/30/2025   07:11:12   (  70.00,  68.64) 08/30/2025   07:10:48  (  70.01,  68.67)    1.14                24
 08/30/2025   08:01:39   ( -69.09,-122.71) 08/30/2025   08:00:32  ( -69.13,-124.88)   86.20                67
 09/01/2025   22:37:22   ( -70.06,  17.02) 09/01/2025   22:37:50  ( -70.07,  16.99)    1.36                28
 09/01/2025   23:28:06   (  69.97,-175.54) 09/01/2025   23:27:17  (  69.95,-175.52)    2.59                49