Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 5 5.  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)
 05/07/2024   06:19:16   ( -71.00,-100.16) 05/07/2024   06:20:23  ( -70.89, -97.81)   86.06                67
 05/07/2024   07:09:45   (  70.10,  68.59) 05/07/2024   07:10:03  (  70.08,  68.63)    2.34                18
 05/07/2024   08:00:26   ( -69.96,-123.87) 05/07/2024   07:59:33  ( -69.97,-123.89)    1.54                53
 05/09/2024   22:35:53   ( -70.15,  16.99) 05/09/2024   22:37:04  ( -70.14,  16.96)    1.49                71
 05/09/2024   23:26:37   (  70.04,-175.53) 05/09/2024   23:26:31  (  70.04,-175.55)    0.79                 6
 05/10/2024   00:17:16   ( -69.79,  -7.84) 05/10/2024   00:16:03  ( -69.82,  -8.23)   15.18                73
 05/12/2024   14:52:46   ( -70.15, 132.77) 05/12/2024   14:53:31  ( -70.13, 132.81)    3.15                45
 05/12/2024   15:43:29   (  69.99, -59.67) 05/12/2024   15:42:58  (  70.02, -59.70)    3.20                31
 05/15/2024   06:19:08   (  70.89,  80.07) 05/15/2024   06:20:16  (  70.79,  82.03)   72.65                68
 05/15/2024   07:09:37   ( -70.11,-111.37) 05/15/2024   07:09:57  ( -70.08,-111.38)    3.59                20
 05/15/2024   08:00:20   (  69.95,  56.18) 05/15/2024   07:59:24  (  69.96,  56.11)    3.30                56
 05/17/2024   22:35:47   (  70.17,-162.99) 05/17/2024   22:36:53  (  70.15,-163.01)    1.91                66
 05/17/2024   23:26:29   ( -70.07,   4.47) 05/17/2024   23:26:23  ( -70.05,   4.47)    2.73                 6
 05/18/2024   00:17:06   (  69.59, 172.49) 05/18/2024   00:15:55  (  69.66, 171.57)   36.33                71