Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 7.  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)
 06/08/2025   14:03:15   ( -70.19, 145.36) 06/08/2025   14:04:21  ( -70.17, 145.37)    2.67                66
 06/08/2025   14:53:59   (  70.04, -47.10) 06/08/2025   14:53:48  (  70.07, -47.13)    3.23                11
 06/08/2025   15:44:34   ( -69.61, 120.86) 06/08/2025   15:43:23  ( -69.68, 119.97)   35.30                71
 06/11/2025   06:20:11   ( -70.13, -98.78) 06/11/2025   06:20:54  ( -70.11, -98.84)    3.17                43
 06/11/2025   07:10:56   (  70.04,  68.67) 06/11/2025   07:10:21  (  70.01,  68.66)    3.41                35
 06/13/2025   21:46:38   (  70.83,-151.45) 06/13/2025   21:47:46  (  70.75,-149.66)   66.02                68
 06/13/2025   22:37:07   ( -70.08,  17.06) 06/13/2025   22:37:26  ( -70.09,  17.01)    2.33                19
 06/13/2025   23:27:52   (  69.99,-175.49) 06/13/2025   23:26:53  (  69.99,-175.50)    0.30                59
 06/16/2025   14:03:22   (  70.15, -34.61) 06/16/2025   14:04:28  (  70.16, -34.65)    2.04                66
 06/16/2025   14:54:04   ( -70.09, 132.81) 06/16/2025   14:53:58  ( -70.06, 132.84)    3.05                 6
 06/16/2025   15:44:41   (  69.57, -59.11) 06/16/2025   15:43:30  (  69.67, -60.06)   38.30                71
 06/19/2025   06:20:17   (  70.11,  81.22) 06/19/2025   06:20:59  (  70.10,  81.14)    2.98                42
 06/19/2025   07:10:59   ( -70.04,-111.35) 06/19/2025   07:10:28  ( -70.06,-111.28)    3.46                31