Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 3 12.  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)
 03/12/2025   14:03:23   (  70.44, -34.97) 03/12/2025   14:04:35  (  70.35, -34.47)   21.43                72
 03/12/2025   14:54:01   ( -70.15, 132.81) 03/12/2025   14:54:07  ( -70.12, 132.84)    3.21                 6
 03/12/2025   15:44:45   (  70.03, -59.70) 03/12/2025   15:43:34  (  70.02, -59.66)    1.58                71
 03/15/2025   06:20:12   (  70.20,  81.18) 03/15/2025   06:21:04  (  70.18,  81.17)    2.56                52
 03/15/2025   07:10:53   ( -70.06,-111.28) 03/15/2025   07:10:34  ( -70.07,-111.36)    2.95                19
 03/15/2025   08:01:22   (  69.14,  57.36) 03/15/2025   08:00:15  (  69.18,  55.09)   89.74                67
 03/17/2025   22:37:05   (  70.13,-162.93) 03/17/2025   22:37:31  (  70.14,-163.01)    2.90                26
 03/17/2025   23:27:47   ( -70.03,   4.53) 03/17/2025   23:27:01  ( -70.03,   4.47)    2.16                46
 03/20/2025   14:03:17   ( -70.32, 145.23) 03/20/2025   14:04:29  ( -70.28, 145.44)    9.54                72
 03/20/2025   14:53:59   (  70.12, -47.15) 03/20/2025   14:53:57  (  70.11, -47.15)    0.90                 2
 03/20/2025   15:44:40   ( -69.96, 120.41) 03/20/2025   15:43:27  ( -70.00, 120.33)    5.56                73
 03/23/2025   06:20:09   ( -70.21, -98.83) 03/23/2025   06:20:55  ( -70.22, -98.75)    2.98                46
 03/23/2025   07:10:52   (  70.07,  68.70) 03/23/2025   07:10:23  (  70.05,  68.65)    3.14                29
 03/25/2025   21:46:31   (  70.91,-151.50) 03/25/2025   21:47:39  (  70.82,-149.59)   70.37                68
 03/25/2025   22:37:01   ( -70.17,  17.01) 03/25/2025   22:37:19  ( -70.17,  17.08)    2.47                18
 03/25/2025   23:27:44   (  70.03,-175.46) 03/25/2025   23:26:46  (  70.05,-175.45)    2.96                58