Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 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)
 05/26/2025   06:20:00   ( -70.17, -98.79) 05/26/2025   06:20:47  ( -70.17, -98.75)    1.50                47
 05/26/2025   07:10:44   (  70.03,  68.73) 05/26/2025   07:10:15  (  70.02,  68.67)    2.54                29
 05/28/2025   21:46:28   (  70.94,-151.59) 05/28/2025   21:47:35  (  70.86,-149.48)   77.37                67
 05/28/2025   22:36:56   ( -70.14,  17.02) 05/28/2025   22:37:16  ( -70.14,  17.09)    2.68                20
 05/28/2025   23:27:40   (  70.00,-175.46) 05/28/2025   23:26:44  (  69.99,-175.49)    1.75                56
 05/31/2025   14:03:11   (  70.18, -34.60) 05/31/2025   14:04:16  (  70.21, -34.57)    3.33                65
 05/31/2025   14:53:52   ( -70.06, 132.90) 05/31/2025   14:53:47  ( -70.04, 132.83)    3.33                 5
 05/31/2025   15:44:30   (  69.60, -59.10) 05/31/2025   15:43:19  (  69.66, -60.06)   37.51                71
 06/03/2025   06:20:08   (  70.16,  81.20) 06/03/2025   06:20:46  (  70.14,  81.22)    1.94                38
 06/03/2025   07:10:49   ( -70.04,-111.30) 06/03/2025   07:10:16  ( -70.04,-111.30)    0.05                33
 06/05/2025   21:46:31   ( -70.80,  28.63) 06/05/2025   21:47:40  ( -70.66,  30.23)   60.78                69
 06/05/2025   22:37:04   (  70.09,-162.93) 06/05/2025   22:37:15  (  70.11,-162.93)    3.00                11
 06/05/2025   23:27:46   ( -70.02,   4.49) 06/05/2025   23:26:45  ( -70.01,   4.55)    2.40                61
 06/08/2025   14:03:15   ( -70.16, 145.41) 06/08/2025   14:04:16  ( -70.18, 145.41)    2.78                61
 06/08/2025   14:54:00   (  70.07, -47.15) 06/08/2025   14:53:43  (  70.07, -47.11)    1.61                17
 06/08/2025   15:44:32   ( -69.47, 121.06) 06/08/2025   15:43:21  ( -69.53, 119.77)   50.39                71