Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2024 4 9.  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   14:52:55   ( -70.08, 132.77) 04/10/2024   14:53:53  ( -70.06, 132.72)    3.29                58
 04/10/2024   15:43:39   (  69.97, -59.75) 04/10/2024   15:43:20  (  69.95, -59.78)    2.42                19
 04/10/2024   16:34:09   ( -69.24, 108.64) 04/10/2024   16:33:00  ( -69.29, 106.95)   66.49                69
 04/13/2024   07:09:50   ( -70.02,-111.36) 04/13/2024   07:10:21  ( -70.04,-111.43)    3.44                31
 04/13/2024   08:00:34   (  69.91,  56.11) 04/13/2024   07:59:48  (  69.93,  56.07)    2.57                46
 04/15/2024   22:36:06   (  70.23,-163.22) 04/15/2024   22:37:17  (  70.21,-162.93)   11.05                71
 04/15/2024   23:26:46   ( -70.02,   4.42) 04/15/2024   23:26:49  ( -70.00,   4.39)    2.41                 3
 04/16/2024   00:17:29   (  69.86, 171.96) 04/16/2024   00:16:16  (  69.88, 171.88)    3.96                73
 04/18/2024   14:52:59   (  70.08, -47.22) 04/18/2024   14:53:46  (  70.09, -47.23)    1.23                47
 04/18/2024   15:43:41   ( -69.97, 120.26) 04/18/2024   15:43:16  ( -69.98, 120.26)    1.54                25
 04/21/2024   06:19:25   ( -70.97,-100.19) 04/21/2024   06:20:32  ( -70.87, -97.83)   86.72                67
 04/21/2024   07:09:53   (  70.04,  68.61) 04/21/2024   07:10:12  (  70.05,  68.60)    0.96                19
 04/21/2024   08:00:35   ( -69.93,-123.91) 04/21/2024   07:59:42  ( -69.95,-123.91)    1.67                53