Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 11 24.  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   ( -70.01,-117.66) 11/25/2023   07:35:50  ( -69.99,-117.60)    3.27                72
 11/25/2023   08:25:21   (  69.84,  49.90) 11/25/2023   08:25:18  (  69.83,  49.83)    2.97                 3
 11/25/2023   09:16:01   ( -69.64,-142.49) 11/25/2023   09:14:49  ( -69.67,-142.77)   11.13                72
 11/27/2023   23:51:34   ( -69.94,  -1.79) 11/27/2023   23:52:21  ( -69.94,  -1.79)    0.13                47
 11/28/2023   00:42:18   (  69.83, 165.68) 11/28/2023   00:41:48  (  69.83, 165.70)    0.89                30
 11/30/2023   15:18:01   (  70.72, -54.57) 11/30/2023   15:19:09  (  70.61, -52.56)   74.74                68
 11/30/2023   16:08:29   ( -69.88, 114.06) 11/30/2023   16:08:50  ( -69.90, 114.04)    3.01                21
 11/30/2023   16:59:13   (  69.77, -78.47) 11/30/2023   16:58:17  (  69.79, -78.47)    2.37                56
 12/03/2023   07:34:44   (  69.99,  62.35) 12/03/2023   07:35:49  (  69.99,  62.41)    2.63                65
 12/03/2023   08:25:25   ( -69.83,-130.10) 12/03/2023   08:25:20  ( -69.83,-130.17)    2.93                 5
 12/03/2023   09:16:03   (  69.41,  37.83) 12/03/2023   09:14:52  (  69.44,  36.94)   34.87                71
 12/05/2023   23:51:40   (  69.95, 178.16) 12/05/2023   23:52:18  (  69.94, 178.22)    2.81                38
 12/06/2023   00:42:22   ( -69.85, -14.36) 12/06/2023   00:41:48  ( -69.84, -14.29)    2.95                34