Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 2.  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)
 11/02/2023   15:42:44   (  70.16, -59.89) 11/02/2023   15:43:56  (  70.08, -59.53)   16.28                72
 11/02/2023   16:33:23   ( -69.90, 107.81) 11/02/2023   16:33:27  ( -69.91, 107.87)    2.41                 4
 11/02/2023   17:24:07   (  69.79, -84.70) 11/02/2023   17:22:54  (  69.81, -84.63)    3.63                73
 11/05/2023   07:59:38   (  69.93,  56.21) 11/05/2023   08:00:26  (  69.92,  56.13)    3.17                48
 11/05/2023   08:50:20   ( -69.83,-136.33) 11/05/2023   08:49:56  ( -69.81,-136.38)    3.44                24
 11/07/2023   23:26:07   ( -70.77,   3.33) 11/07/2023   23:27:15  ( -70.66,   5.45)   78.97                68
 11/08/2023   00:16:36   (  69.88, 172.05) 11/08/2023   00:16:54  (  69.89, 171.98)    2.94                18
 11/08/2023   01:07:18   ( -69.78, -20.49) 11/08/2023   01:06:24  ( -69.79, -20.53)    2.02                54
 11/10/2023   15:42:51   ( -69.99, 120.32) 11/10/2023   15:43:54  ( -70.00, 120.38)    2.74                63
 11/10/2023   16:33:34   (  69.83, -72.13) 11/10/2023   16:33:22  (  69.83, -72.21)    2.93                12
 11/10/2023   17:24:09   ( -69.36,  95.88) 11/10/2023   17:22:58  ( -69.40,  94.83)   41.05                71
 11/13/2023   07:59:48   ( -69.90,-123.79) 11/13/2023   08:00:22  ( -69.91,-123.85)    2.75                34
 11/13/2023   08:50:32   (  69.80,  43.67) 11/13/2023   08:49:49  (  69.80,  43.63)    1.58                43
 11/15/2023   23:26:05   (  70.09,-175.64) 11/15/2023   23:27:16  (  70.06,-175.38)   10.29                71
 11/16/2023   00:16:45   ( -69.87,  -7.99) 11/16/2023   00:16:47  ( -69.90,  -7.97)    3.25                 2
 11/16/2023   01:07:28   (  69.72, 159.54) 11/16/2023   01:06:15  (  69.73, 159.43)    4.30                73