Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 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)
 05/07/2025   14:02:55   ( -70.65, 144.77) 05/07/2025   14:04:06  ( -70.56, 145.80)   39.66                71
 05/07/2025   14:53:32   (  70.18, -47.17) 05/07/2025   14:53:38  (  70.19, -47.10)    3.01                 6
 05/07/2025   15:44:14   ( -70.08, 120.30) 05/07/2025   15:43:08  ( -70.07, 120.37)    2.79                66
 05/10/2025   06:19:44   ( -70.22, -98.78) 05/10/2025   06:20:39  ( -70.19, -98.85)    3.64                55
 05/10/2025   07:10:28   (  70.10,  68.70) 05/10/2025   07:10:06  (  70.09,  68.64)    2.53                22
 05/10/2025   08:00:56   ( -69.27,-122.75) 05/10/2025   07:59:48  ( -69.32,-124.78)   79.98                68
 05/12/2025   21:46:16   (  71.14,-151.84) 05/12/2025   21:47:22  (  71.06,-149.31)   91.85                66
 05/12/2025   22:36:42   ( -70.20,  17.00) 05/12/2025   22:37:06  ( -70.18,  17.01)    2.44                24
 05/12/2025   23:27:26   (  70.09,-175.52) 05/12/2025   23:26:33  (  70.08,-175.50)    1.84                53
 05/15/2025   14:02:57   (  70.24, -34.62) 05/15/2025   14:04:03  (  70.25, -34.64)    1.47                66
 05/15/2025   14:53:39   ( -70.15, 132.84) 05/15/2025   14:53:33  ( -70.14, 132.84)    0.33                 6
 05/15/2025   15:44:16   (  69.66, -59.12) 05/15/2025   15:43:05  (  69.76, -60.06)   37.71                71
 05/18/2025   06:19:54   (  70.19,  81.22) 05/18/2025   06:20:30  (  70.18,  81.15)    2.77                36
 05/18/2025   07:10:36   ( -70.09,-111.32) 05/18/2025   07:10:00  ( -70.07,-111.37)    2.88                36
 05/20/2025   21:46:13   ( -70.63,  28.98) 05/20/2025   21:47:24  ( -70.47,  29.81)   35.44                71
 05/20/2025   22:36:50   (  70.14,-162.95) 05/20/2025   22:36:55  (  70.14,-163.03)    2.83                 5
 05/20/2025   23:27:32   ( -70.05,   4.51) 05/20/2025   23:26:25  ( -70.03,   4.46)    2.55                67