Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 10 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)
 10/04/2023   07:59:20   (  70.01,  56.20) 10/04/2023   08:00:20  (  70.01,  56.27)    2.69                60
 10/04/2023   08:50:01   ( -69.87,-136.27) 10/04/2023   08:49:50  ( -69.89,-136.25)    2.36                11
 10/04/2023   09:40:36   (  69.27,  31.91) 10/04/2023   09:39:26  (  69.29,  30.58)   52.31                70
 10/07/2023   00:16:13   (  69.96, 172.05) 10/07/2023   00:16:49  (  69.95, 172.08)    1.64                36
 10/07/2023   01:06:54   ( -69.82, -20.42) 10/07/2023   01:06:19  ( -69.84, -20.44)    2.10                35
 10/09/2023   15:42:32   ( -70.56, 119.58) 10/09/2023   15:43:42  ( -70.45, 121.05)   55.89                70
 10/09/2023   16:33:06   (  69.92, -72.12) 10/09/2023   16:33:17  (  69.91, -72.09)    2.09                11
 10/09/2023   17:23:47   ( -69.78,  95.41) 10/09/2023   17:22:47  ( -69.80,  95.40)    2.35                60
 10/12/2023   07:59:14   ( -70.01,-123.78) 10/12/2023   08:00:16  ( -70.00,-123.71)    2.68                62
 10/12/2023   08:49:58   (  69.90,  43.69) 10/12/2023   08:49:43  (  69.88,  43.77)    3.44                15
 10/12/2023   09:40:31   ( -69.33,-148.16) 10/12/2023   09:39:20  ( -69.39,-149.26)   43.98                71
 10/15/2023   00:16:06   ( -69.94,  -7.90) 10/15/2023   00:16:43  ( -69.94,  -7.90)    0.12                37
 10/15/2023   01:06:50   (  69.83, 159.57) 10/15/2023   01:06:10  (  69.82, 159.58)    1.45                40