Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 20.  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)
 04/21/2024   06:19:26   ( -71.07,-100.36) 04/21/2024   06:20:32  ( -70.96, -97.70)   96.93                66
 04/21/2024   07:09:52   (  70.02,  68.64) 04/21/2024   07:10:14  (  70.04,  68.58)    3.12                22
 04/21/2024   08:00:34   ( -69.93,-123.89) 04/21/2024   07:59:44  ( -69.93,-123.94)    1.83                50
 04/23/2024   22:36:04   ( -70.20,  16.84) 04/23/2024   22:37:15  ( -70.20,  17.04)    7.54                71
 04/23/2024   23:26:47   (  70.04,-175.61) 04/23/2024   23:26:43  (  70.04,-175.55)    2.43                 4
 04/24/2024   00:17:27   ( -69.84,  -7.99) 04/24/2024   00:16:14  ( -69.88,  -8.15)    7.18                73
 04/26/2024   14:52:56   ( -70.09, 132.79) 04/26/2024   14:53:45  ( -70.08, 132.74)    2.08                49
 04/26/2024   15:43:40   (  69.98, -59.74) 04/26/2024   15:43:12  (  69.97, -59.77)    1.78                28
 04/29/2024   06:19:22   (  70.99,  79.81) 04/29/2024   06:20:28  (  70.88,  82.17)   86.66                66
 04/29/2024   07:09:48   ( -70.05,-111.36) 04/29/2024   07:10:11  ( -70.06,-111.41)    2.05                23
 04/29/2024   08:00:32   (  69.95,  56.10) 04/29/2024   07:59:38  (  69.95,  56.08)    0.88                54
 05/01/2024   22:35:59   (  70.14,-163.03) 05/01/2024   22:37:07  (  70.13,-163.05)    1.16                68
 05/01/2024   23:26:41   ( -70.03,   4.45) 05/01/2024   23:26:37  ( -70.02,   4.43)    1.06                 4
 05/02/2024   00:17:19   (  69.61, 172.38) 05/02/2024   00:16:08  (  69.69, 171.61)   30.86                71