Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 1 24.  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)
 01/26/2025   06:20:04   (  70.39,  81.01) 01/26/2025   06:21:16  (  70.30,  81.38)   17.01                72
 01/26/2025   07:10:42   ( -70.12,-111.24) 01/26/2025   07:10:47  ( -70.14,-111.23)    2.28                 5
 01/26/2025   08:01:26   (  69.99,  56.27) 01/26/2025   08:00:15  (  69.98,  56.20)    2.71                71
 01/28/2025   22:36:47   (  70.23,-162.94) 01/28/2025   22:37:48  (  70.22,-162.88)    2.90                61
 01/28/2025   23:27:28   ( -70.12,   4.56) 01/28/2025   23:27:18  ( -70.11,   4.60)    1.54                10
 01/29/2025   00:18:03   (  69.51, 172.77) 01/29/2025   00:16:53  (  69.56, 171.49)   50.28                70
 01/31/2025   14:53:33   (  70.20, -47.08) 01/31/2025   14:54:19  (  70.21, -47.02)    2.34                46
 01/31/2025   15:44:14   ( -70.08, 120.43) 01/31/2025   15:43:49  ( -70.10, 120.46)    3.09                25
 02/03/2025   07:10:19   (  70.17,  68.76) 02/03/2025   07:10:50  (  70.16,  68.78)    1.76                31
 02/03/2025   08:01:00   ( -70.05,-123.74) 02/03/2025   08:00:20  ( -70.06,-123.73)    0.51                40
 02/05/2025   22:36:34   ( -70.97,  15.97) 02/05/2025   22:37:42  ( -70.85,  18.03)   76.17                68
 02/05/2025   23:27:04   (  70.12,-175.34) 02/05/2025   23:27:20  (  70.13,-175.38)    2.38                16
 02/06/2025   00:17:46   ( -70.05,  -7.92) 02/06/2025   00:16:50  ( -70.03,  -7.89)    2.01                56