Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 25.  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)
 07/26/2025   14:03:36   ( -70.17, 145.31) 07/26/2025   14:04:43  ( -70.14, 145.33)    2.88                67
 07/26/2025   14:54:19   (  70.01, -47.15) 07/26/2025   14:54:10  (  70.04, -47.17)    2.98                 9
 07/26/2025   15:44:56   ( -69.65, 120.72) 07/26/2025   15:43:44  ( -69.71, 120.00)   28.69                72
 07/29/2025   06:20:31   ( -70.13, -98.86) 07/29/2025   06:21:13  ( -70.10, -98.85)    3.38                42
 07/29/2025   07:11:14   (  69.98,  68.67) 07/29/2025   07:10:40  (  69.99,  68.64)    1.50                34
 07/31/2025   21:46:55   (  70.79,-151.47) 07/31/2025   21:48:03  (  70.69,-149.73)   64.70                68
 07/31/2025   22:37:26   ( -70.09,  16.96) 07/31/2025   22:37:42  ( -70.09,  17.02)    2.54                16
 07/31/2025   23:28:09   (  69.95,-175.52) 07/31/2025   23:27:09  (  69.98,-175.49)    3.23                60
 08/03/2025   14:03:38   (  70.14, -34.65) 08/03/2025   14:04:42  (  70.11, -34.69)    2.95                64
 08/03/2025   14:54:19   ( -70.01, 132.85) 08/03/2025   14:54:11  ( -70.01, 132.80)    2.18                 8
 08/03/2025   15:44:55   (  69.50, -59.09) 08/03/2025   15:43:44  (  69.57, -60.17)   42.87                71
 08/06/2025   06:20:32   (  70.12,  81.15) 08/06/2025   06:21:09  (  70.12,  81.21)    2.31                37
 08/06/2025   07:11:14   ( -69.99,-111.34) 08/06/2025   07:10:40  ( -69.97,-111.38)    2.78                34