Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 23.  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)
 11/25/2023   07:34:38   ( -70.02,-117.67) 11/25/2023   07:35:50  ( -69.98,-117.61)    5.04                72
 11/25/2023   08:25:21   (  69.85,  49.88) 11/25/2023   08:25:17  (  69.87,  49.89)    2.08                 4
 11/25/2023   09:16:01   ( -69.65,-142.50) 11/25/2023   09:14:48  ( -69.71,-142.71)   10.32                73
 11/27/2023   23:51:34   ( -69.95,  -1.81) 11/27/2023   23:52:21  ( -69.92,  -1.82)    3.21                47
 11/28/2023   00:42:18   (  69.84, 165.66) 11/28/2023   00:41:48  (  69.81, 165.68)    3.32                30
 11/30/2023   15:18:02   (  70.73, -54.59) 11/30/2023   15:19:09  (  70.64, -52.52)   76.89                67
 11/30/2023   16:08:30   ( -69.89, 114.04) 11/30/2023   16:08:51  ( -69.88, 114.01)    1.96                21
 11/30/2023   16:59:14   (  69.79, -78.49) 11/30/2023   16:58:18  (  69.77, -78.50)    2.17                56
 12/03/2023   07:34:43   (  69.95,  62.40) 12/03/2023   07:35:49  (  69.96,  62.37)    1.36                66
 12/03/2023   08:25:25   ( -69.85,-130.12) 12/03/2023   08:25:19  ( -69.86,-130.14)    1.26                 6
 12/03/2023   09:16:02   (  69.37,  37.88) 12/03/2023   09:14:51  (  69.46,  36.97)   36.95                71
 12/05/2023   23:51:39   (  69.92, 178.21) 12/05/2023   23:52:17  (  69.95, 178.24)    3.25                38
 12/06/2023   00:42:21   ( -69.81, -14.31) 12/06/2023   00:41:48  ( -69.79, -14.34)    2.54                33