Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 8.  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   07:34:28   ( -70.34,-118.09) 11/09/2023   07:35:39  ( -70.19,-117.28)   34.52                71
 11/09/2023   08:25:05   (  69.85,  49.96) 11/09/2023   08:25:10  (  69.87,  49.91)    2.50                 5
 11/09/2023   09:15:47   ( -69.76,-142.58) 11/09/2023   09:14:40  ( -69.76,-142.61)    1.02                67
 11/11/2023   23:51:18   ( -69.95,  -1.73) 11/11/2023   23:52:12  ( -69.92,  -1.78)    3.25                54
 11/12/2023   00:42:02   (  69.84, 165.74) 11/12/2023   00:41:39  (  69.82, 165.72)    2.44                23
 11/12/2023   01:32:29   ( -68.94, -25.66) 11/12/2023   01:31:22  ( -68.99, -27.75)   83.37                67
 11/14/2023   15:17:50   (  70.89, -54.79) 11/14/2023   15:18:56  (  70.80, -52.24)   93.41                66
 11/14/2023   16:08:15   ( -69.89, 114.11) 11/14/2023   16:08:41  ( -69.87, 114.03)    3.66                26
 11/14/2023   16:58:59   (  69.78, -78.42) 11/14/2023   16:58:08  (  69.76, -78.47)    3.29                51
 11/17/2023   07:34:30   (  69.96,  62.45) 11/17/2023   07:35:38  (  69.98,  62.44)    2.08                68
 11/17/2023   08:25:12   ( -69.85,-130.07) 11/17/2023   08:25:08  ( -69.87,-130.07)    2.06                 4
 11/17/2023   09:15:51   (  69.48,  37.78) 11/17/2023   09:14:39  (  69.54,  37.11)   26.52                72
 11/19/2023   23:51:27   (  69.94, 178.24) 11/19/2023   23:52:05  (  69.92, 178.25)    2.49                38
 11/20/2023   00:42:09   ( -69.83, -14.28) 11/20/2023   00:41:35  ( -69.82, -14.26)    2.09                34