Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 9.  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   ( -70.32,-118.06) 11/09/2023   07:35:38  ( -70.21,-117.25)   32.78                71
 11/09/2023   08:25:05   (  69.89,  49.91) 11/09/2023   08:25:09  (  69.89,  49.94)    1.33                 4
 11/09/2023   09:15:47   ( -69.79,-142.64) 11/09/2023   09:14:39  ( -69.78,-142.58)    2.63                68
 11/11/2023   23:51:18   ( -69.93,  -1.70) 11/11/2023   23:52:12  ( -69.95,  -1.75)    2.73                54
 11/12/2023   00:42:02   (  69.81, 165.77) 11/12/2023   00:41:39  (  69.84, 165.75)    3.11                23
 11/12/2023   01:32:30   ( -68.97, -25.71) 11/12/2023   01:31:22  ( -69.01, -27.72)   80.30                68
 11/14/2023   15:17:51   (  70.91, -54.83) 11/14/2023   15:18:57  (  70.78, -52.28)   94.24                66
 11/14/2023   16:08:16   ( -69.92, 114.07) 11/14/2023   16:08:41  ( -69.90, 114.08)    1.83                25
 11/14/2023   16:59:00   (  69.81, -78.46) 11/14/2023   16:58:08  (  69.79, -78.43)    2.14                52
 11/17/2023   07:34:31   (  69.97,  62.43) 11/17/2023   07:35:39  (  69.96,  62.42)    1.20                68
 11/17/2023   08:25:13   ( -69.87,-130.10) 11/17/2023   08:25:09  ( -69.86,-130.10)    1.44                 4
 11/17/2023   09:15:51   (  69.50,  37.75) 11/17/2023   09:14:39  (  69.52,  37.09)   25.84                72
 11/19/2023   23:51:27   (  69.95, 178.23) 11/19/2023   23:52:05  (  69.92, 178.25)    3.00                38
 11/20/2023   00:42:09   ( -69.84, -14.29) 11/20/2023   00:41:35  ( -69.81, -14.26)    2.85                34
 11/22/2023   15:17:48   ( -70.45, 125.90) 11/22/2023   15:18:58  ( -70.32, 127.08)   46.22                70
 11/22/2023   16:08:23   (  69.88, -65.91) 11/22/2023   16:08:31  (  69.88, -65.91)    0.16                 8
 11/22/2023   16:59:05   ( -69.77, 101.57) 11/22/2023   16:58:01  ( -69.77, 101.58)    0.67                64