Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 11 1.  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, -59.90) 11/02/2023   15:43:56  (  70.07, -59.53)   16.95                72
 11/02/2023   16:33:23   ( -69.91, 107.81) 11/02/2023   16:33:27  ( -69.91, 107.87)    2.35                 4
 11/02/2023   17:24:07   (  69.79, -84.71) 11/02/2023   17:22:54  (  69.80, -84.63)    3.07                73
 11/05/2023   07:59:39   (  69.94,  56.20) 11/05/2023   08:00:26  (  69.96,  56.20)    2.58                47
 11/05/2023   08:50:20   ( -69.84,-136.34) 11/05/2023   08:49:55  ( -69.85,-136.32)    1.67                25
 11/07/2023   23:26:07   ( -70.78,   3.31) 11/07/2023   23:27:14  ( -70.69,   5.51)   81.08                67
 11/08/2023   00:16:36   (  69.89, 172.03) 11/08/2023   00:16:54  (  69.87, 171.96)    3.35                18
 11/08/2023   01:07:18   ( -69.79, -20.50) 11/08/2023   01:06:24  ( -69.77, -20.56)    3.04                54
 11/10/2023   15:42:50   ( -69.95, 120.38) 11/10/2023   15:43:54  ( -69.97, 120.34)    2.24                64
 11/10/2023   16:33:34   (  69.85, -72.16) 11/10/2023   16:33:21  (  69.85, -72.18)    0.97                13
 11/10/2023   17:24:08   ( -69.32,  95.93) 11/10/2023   17:22:57  ( -69.42,  94.87)   43.16                71
 11/13/2023   07:59:48   ( -69.92,-123.82) 11/13/2023   08:00:21  ( -69.92,-123.84)    0.97                33
 11/13/2023   08:50:32   (  69.82,  43.64) 11/13/2023   08:49:48  (  69.80,  43.64)    2.52                44