Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 7.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 11/09/2023   07:34:27   ( -70.31,-118.04) 11/09/2023   07:35:38  ( -70.22,-117.24)   31.73                71
 11/09/2023   08:25:05   (  69.88,  49.92) 11/09/2023   08:25:09  (  69.89,  49.95)    2.17                 4
 11/09/2023   09:15:47   ( -69.78,-142.62) 11/09/2023   09:14:39  ( -69.78,-142.57)    1.68                68
 11/11/2023   23:51:18   ( -69.92,  -1.69) 11/11/2023   23:52:12  ( -69.93,  -1.77)    2.92                54
 11/12/2023   00:42:02   (  69.81, 165.78) 11/12/2023   00:41:39  (  69.82, 165.73)    2.26                23
 11/12/2023   01:32:30   ( -68.97, -25.70) 11/12/2023   01:31:22  ( -69.00, -27.74)   81.29                68
 11/14/2023   15:17:50   (  70.87, -54.75) 11/14/2023   15:18:56  (  70.78, -52.26)   91.38                66
 11/14/2023   16:08:16   ( -69.92, 114.06) 11/14/2023   16:08:40  ( -69.91, 114.09)    2.13                24
 11/14/2023   16:59:00   (  69.82, -78.47) 11/14/2023   16:58:07  (  69.79, -78.42)    3.18                53
 11/17/2023   07:34:30   (  70.00,  62.39) 11/17/2023   07:35:36  (  69.98,  62.45)    3.27                66
 11/17/2023   08:25:12   ( -69.89,-130.13) 11/17/2023   08:25:06  ( -69.87,-130.06)    3.36                 6
 11/17/2023   09:15:49   (  69.42,  37.87) 11/17/2023   09:14:38  (  69.48,  37.05)   33.01                71
 11/19/2023   23:51:26   (  69.94, 178.24) 11/19/2023   23:52:02  (  69.93, 178.28)    1.60                36
 11/20/2023   00:42:08   ( -69.83, -14.27) 11/20/2023   00:41:32  ( -69.83, -14.23)    1.79                36