Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 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)
 01/25/2024   15:17:53   ( -70.90, 125.20) 01/25/2024   15:18:59  ( -70.78, 127.69)   91.89                66
 01/25/2024   16:08:21   (  69.94, -65.96) 01/25/2024   16:08:40  (  69.91, -65.93)    3.09                19
 01/25/2024   16:59:02   ( -69.81, 101.55) 01/25/2024   16:58:10  ( -69.80, 101.54)    0.97                52
 01/28/2024   07:34:28   ( -69.98,-117.56) 01/28/2024   07:35:39  ( -70.01,-117.55)    2.66                71
 01/28/2024   08:25:12   (  69.86,  49.93) 01/28/2024   08:25:07  (  69.84,  49.86)    3.44                 5
 01/28/2024   09:15:51   ( -69.62,-142.39) 01/28/2024   09:14:38  ( -69.68,-142.73)   14.40                73
 01/30/2024   23:51:19   ( -69.97,  -1.75) 01/30/2024   23:52:04  ( -69.96,  -1.72)    1.29                45
 01/31/2024   00:42:03   (  69.85, 165.74) 01/31/2024   00:41:31  (  69.85, 165.77)    1.09                32
 02/02/2024   15:17:41   (  70.68, -54.40) 02/02/2024   15:18:49  (  70.59, -52.55)   69.18                68
 02/02/2024   16:08:10   ( -69.91, 114.13) 02/02/2024   16:08:29  ( -69.93, 114.13)    2.23                19
 02/02/2024   16:58:54   (  69.80, -78.39) 02/02/2024   16:57:56  (  69.82, -78.38)    2.31                58
 02/05/2024   07:34:19   (  69.96,  62.53) 02/05/2024   07:35:24  (  69.97,  62.46)    3.32                65
 02/05/2024   08:25:01   ( -69.87,-130.02) 02/05/2024   08:24:54  ( -69.87,-130.06)    1.50                 7
 02/05/2024   09:15:38   (  69.38,  38.00) 02/05/2024   09:14:27  (  69.42,  36.98)   40.11                71