Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 8.  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)
 04/10/2024   14:52:56   ( -70.09, 132.76) 04/10/2024   14:53:53  ( -70.10, 132.79)    1.74                57
 04/10/2024   15:43:40   (  69.98, -59.77) 04/10/2024   15:43:20  (  70.00, -59.72)    2.43                20
 04/10/2024   16:34:10   ( -69.25, 108.63) 04/10/2024   16:33:01  ( -69.28, 106.94)   66.45                69
 04/13/2024   07:09:50   ( -70.03,-111.37) 04/13/2024   07:10:21  ( -70.03,-111.44)    2.88                31
 04/13/2024   08:00:34   (  69.92,  56.10) 04/13/2024   07:59:48  (  69.92,  56.05)    2.05                46
 04/15/2024   22:36:06   (  70.23,-163.23) 04/15/2024   22:37:17  (  70.19,-162.96)   11.19                71
 04/15/2024   23:26:46   ( -70.02,   4.41) 04/15/2024   23:26:48  ( -70.03,   4.45)    1.90                 2
 04/16/2024   00:17:29   (  69.87, 171.95) 04/16/2024   00:16:16  (  69.87, 171.86)    3.72                73
 04/18/2024   14:52:59   (  70.08, -47.22) 04/18/2024   14:53:46  (  70.06, -47.26)    2.62                47
 04/18/2024   15:43:41   ( -69.97, 120.26) 04/18/2024   15:43:16  ( -69.96, 120.23)    1.92                25
 04/21/2024   06:19:26   ( -70.97,-100.19) 04/21/2024   06:20:33  ( -70.84, -97.87)   85.62                67
 04/21/2024   07:09:54   (  70.04,  68.61) 04/21/2024   07:10:12  (  70.07,  68.63)    3.24                18
 04/21/2024   08:00:36   ( -69.93,-123.90) 04/21/2024   07:59:43  ( -69.91,-123.95)    2.61                53