Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 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)
 01/09/2024   15:18:00   ( -70.63, 125.59) 01/09/2024   15:19:09  ( -70.53, 127.31)   64.28                69
 01/09/2024   16:08:31   (  69.87, -65.93) 01/09/2024   16:08:45  (  69.88, -65.98)    2.49                14
 01/09/2024   16:59:13   ( -69.79, 101.51) 01/09/2024   16:58:15  ( -69.77, 101.50)    2.39                58
 01/12/2024   07:34:41   ( -70.00,-117.65) 01/12/2024   07:35:48  ( -70.00,-117.59)    2.30                67
 01/12/2024   08:25:25   (  69.88,  49.84) 01/12/2024   08:25:15  (  69.90,  49.91)    3.25                10
 01/12/2024   09:16:01   ( -69.48,-142.25) 01/12/2024   09:14:49  ( -69.57,-142.91)   27.44                72
 01/14/2024   23:51:34   ( -69.96,  -1.81) 01/14/2024   23:52:19  ( -69.94,  -1.80)    2.38                45
 01/15/2024   00:42:18   (  69.84, 165.68) 01/15/2024   00:41:46  (  69.83, 165.69)    1.22                32
 01/17/2024   15:18:00   (  70.80, -54.67) 01/17/2024   15:19:07  (  70.66, -52.50)   81.14                67
 01/17/2024   16:08:27   ( -69.92, 114.03) 01/17/2024   16:08:49  ( -69.90, 114.02)    2.86                22
 01/17/2024   16:59:11   (  69.81, -78.49) 01/17/2024   16:58:16  (  69.79, -78.49)    2.24                55
 01/20/2024   07:34:38   (  69.99,  62.39) 01/20/2024   07:35:48  (  69.99,  62.40)    0.35                70
 01/20/2024   08:25:19   ( -69.90,-130.15) 01/20/2024   08:25:17  ( -69.89,-130.11)    1.98                 2
 01/20/2024   09:15:59   (  69.57,  37.64) 01/20/2024   09:14:47  (  69.61,  37.15)   19.45                72
 01/22/2024   23:51:30   (  69.97, 178.20) 01/22/2024   23:52:16  (  69.95, 178.22)    2.54                46
 01/23/2024   00:42:11   ( -69.83, -14.27) 01/23/2024   00:41:46  ( -69.85, -14.28)    2.48                25