Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 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)
 07/26/2025   14:03:36   ( -70.15, 145.33) 07/26/2025   14:04:43  ( -70.16, 145.35)    0.96                67
 07/26/2025   14:54:20   (  70.05, -47.21) 07/26/2025   14:54:10  (  70.05, -47.15)    2.04                10
 07/26/2025   15:44:56   ( -69.63, 120.74) 07/26/2025   15:43:44  ( -69.72, 120.02)   29.76                72
 07/29/2025   06:20:31   ( -70.11, -98.84) 07/29/2025   06:21:13  ( -70.11, -98.83)    0.46                42
 07/29/2025   07:11:15   (  70.02,  68.61) 07/29/2025   07:10:40  (  70.00,  68.66)    2.73                35
 07/31/2025   21:46:54   (  70.78,-151.44) 07/31/2025   21:48:02  (  70.70,-149.71)   64.13                68
 07/31/2025   22:37:25   ( -70.08,  16.98) 07/31/2025   22:37:41  ( -70.10,  17.04)    3.38                16
 07/31/2025   23:28:08   (  69.94,-175.50) 07/31/2025   23:27:09  (  69.94,-175.55)    2.04                59
 08/03/2025   14:03:37   (  70.12, -34.63) 08/03/2025   14:04:41  (  70.12, -34.68)    1.79                64
 08/03/2025   14:54:19   ( -70.00, 132.87) 08/03/2025   14:54:11  ( -70.02, 132.81)    3.28                 8
 08/03/2025   15:44:55   (  69.49, -59.07) 08/03/2025   15:43:44  (  69.57, -60.16)   43.48                71
 08/06/2025   06:20:32   (  70.11,  81.16) 08/06/2025   06:21:09  (  70.13,  81.22)    2.96                37
 08/06/2025   07:11:14   ( -69.97,-111.32) 08/06/2025   07:10:40  ( -69.97,-111.37)    1.92                34