Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 7.  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   ( -70.65, 125.56) 01/09/2024   15:19:09  ( -70.51, 127.28)   65.33                69
 01/09/2024   16:08:32   (  69.89, -65.96) 01/09/2024   16:08:45  (  69.92, -65.93)    2.85                13
 01/09/2024   16:59:14   ( -69.81, 101.48) 01/09/2024   16:58:15  ( -69.81, 101.55)    2.59                59
 01/12/2024   07:34:41   ( -69.96,-117.59) 01/12/2024   07:35:49  ( -70.00,-117.60)    3.50                68
 01/12/2024   08:25:25   (  69.84,  49.90) 01/12/2024   08:25:17  (  69.83,  49.82)    3.11                 8
 01/12/2024   09:16:02   ( -69.50,-142.27) 01/12/2024   09:14:50  ( -69.56,-142.92)   26.00                72
 01/14/2024   23:51:34   ( -69.97,  -1.83) 01/14/2024   23:52:19  ( -69.95,  -1.79)    3.16                45
 01/15/2024   00:42:18   (  69.85, 165.66) 01/15/2024   00:41:46  (  69.83, 165.70)    2.60                32
 01/17/2024   15:18:00   (  70.81, -54.69) 01/17/2024   15:19:07  (  70.69, -52.47)   82.74                67
 01/17/2024   16:08:27   ( -69.93, 114.01) 01/17/2024   16:08:49  ( -69.93, 114.06)    1.91                22
 01/17/2024   16:59:11   (  69.82, -78.51) 01/17/2024   16:58:16  (  69.81, -78.45)    2.09                55
 01/20/2024   07:34:38   (  69.99,  62.39) 01/20/2024   07:35:49  (  69.99,  62.39)    0.64                71
 01/20/2024   08:25:20   ( -69.90,-130.16) 01/20/2024   08:25:19  ( -69.89,-130.12)    2.29                 1
 01/20/2024   09:16:01   (  69.63,  37.55) 01/20/2024   09:14:48  (  69.66,  37.21)   13.53                73