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   (  70.38,  81.03) 01/26/2025   06:21:16  (  70.31,  81.39)   15.91                72
 01/26/2025   07:10:42   ( -70.11,-111.22) 01/26/2025   07:10:48  ( -70.09,-111.30)    3.57                 6
 01/26/2025   08:01:26   (  69.98,  56.28) 01/26/2025   08:00:15  (  69.99,  56.20)    3.01                71
 01/28/2025   22:36:47   (  70.23,-162.92) 01/28/2025   22:37:48  (  70.20,-162.90)    3.09                61
 01/28/2025   23:27:28   ( -70.11,   4.58) 01/28/2025   23:27:18  ( -70.09,   4.58)    1.59                10
 01/29/2025   00:18:03   (  69.50, 172.78) 01/29/2025   00:16:53  (  69.54, 171.47)   51.54                70
 01/31/2025   14:53:33   (  70.19, -47.07) 01/31/2025   14:54:18  (  70.20, -47.02)    2.24                45
 01/31/2025   15:44:14   ( -70.07, 120.44) 01/31/2025   15:43:48  ( -70.10, 120.46)    3.31                26
 02/03/2025   07:10:19   (  70.17,  68.77) 02/03/2025   07:10:48  (  70.15,  68.79)    2.01                29
 02/03/2025   08:01:00   ( -70.05,-123.73) 02/03/2025   08:00:18  ( -70.05,-123.73)    0.19                42
 02/05/2025   22:36:32   ( -70.87,  16.15) 02/05/2025   22:37:40  ( -70.77,  17.93)   65.93                68
 02/05/2025   23:27:04   (  70.12,-175.34) 02/05/2025   23:27:17  (  70.11,-175.40)    2.40                13
 02/06/2025   00:17:45   ( -69.99,  -7.84) 02/06/2025   00:16:47  ( -70.01,  -7.91)    3.00                58