Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 12.  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)
 04/13/2024   07:09:50   ( -70.02,-111.37) 04/13/2024   07:10:21  ( -70.03,-111.44)    2.81                31
 04/13/2024   08:00:34   (  69.92,  56.11) 04/13/2024   07:59:48  (  69.93,  56.06)    2.18                46
 04/15/2024   22:36:06   (  70.23,-163.23) 04/15/2024   22:37:17  (  70.21,-162.94)   11.19                71
 04/15/2024   23:26:46   ( -70.03,   4.41) 04/15/2024   23:26:48  ( -70.04,   4.46)    2.71                 2
 04/16/2024   00:17:29   (  69.87, 171.95) 04/16/2024   00:16:16  (  69.88, 171.87)    3.41                73
 04/18/2024   14:52:59   (  70.09, -47.23) 04/18/2024   14:53:46  (  70.08, -47.25)    1.07                47
 04/18/2024   15:43:41   ( -69.98, 120.25) 04/18/2024   15:43:16  ( -69.97, 120.24)    1.26                25
 04/21/2024   06:19:26   ( -70.99,-100.22) 04/21/2024   06:20:33  ( -70.86, -97.86)   87.06                67
 04/21/2024   07:09:54   (  70.05,  68.60) 04/21/2024   07:10:13  (  70.03,  68.57)    2.49                19
 04/21/2024   08:00:35   ( -69.95,-123.93) 04/21/2024   07:59:42  ( -69.93,-123.94)    2.17                53
 04/23/2024   22:36:04   ( -70.13,  16.95) 04/23/2024   22:37:11  ( -70.13,  16.96)    0.89                67
 04/23/2024   23:26:48   (  70.03,-175.59) 04/23/2024   23:26:38  (  70.01,-175.56)    1.84                10
 04/24/2024   00:17:24   ( -69.60,  -7.64) 04/24/2024   00:16:12  ( -69.69,  -8.38)   30.11                72