Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 11.  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   07:09:51   ( -70.04,-111.40) 04/13/2024   07:10:21  ( -70.07,-111.38)    2.92                30
 04/13/2024   08:00:35   (  69.94,  56.07) 04/13/2024   07:59:48  (  69.96,  56.11)    3.37                47
 04/15/2024   22:36:06   (  70.25,-163.26) 04/15/2024   22:37:17  (  70.19,-162.96)   13.16                71
 04/15/2024   23:26:46   ( -70.05,   4.38) 04/15/2024   23:26:48  ( -70.03,   4.44)    3.00                 2
 04/16/2024   00:17:28   (  69.84, 172.00) 04/16/2024   00:16:16  (  69.86, 171.85)    6.57                72
 04/18/2024   14:52:58   (  70.05, -47.18) 04/18/2024   14:53:46  (  70.07, -47.26)    3.27                48
 04/18/2024   15:43:40   ( -69.95, 120.29) 04/18/2024   15:43:16  ( -69.96, 120.23)    2.96                24
 04/21/2024   06:19:26   ( -71.01,-100.25) 04/21/2024   06:20:32  ( -70.91, -97.78)   90.63                66
 04/21/2024   07:09:53   (  70.02,  68.64) 04/21/2024   07:10:13  (  70.03,  68.57)    2.78                20
 04/21/2024   08:00:35   ( -69.92,-123.88) 04/21/2024   07:59:43  ( -69.93,-123.94)    2.58                52
 04/23/2024   22:36:05   ( -70.15,  16.91) 04/23/2024   22:37:12  ( -70.14,  16.97)    2.32                67
 04/23/2024   23:26:48   (  70.00,-175.55) 04/23/2024   23:26:39  (  70.02,-175.55)    2.34                 9
 04/24/2024   00:17:25   ( -69.63,  -7.68) 04/24/2024   00:16:13  ( -69.70,  -8.37)   27.90                72