Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 1 14.  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)
 01/14/2024   23:51:33   ( -69.94,  -1.78) 01/14/2024   23:52:18  ( -69.94,  -1.80)    0.91                45
 01/15/2024   00:42:17   (  69.82, 165.72) 01/15/2024   00:41:45  (  69.84, 165.70)    2.37                32
 01/17/2024   15:17:58   (  70.74, -54.57) 01/17/2024   15:19:06  (  70.64, -52.54)   75.37                68
 01/17/2024   16:08:26   ( -69.92, 114.04) 01/17/2024   16:08:47  ( -69.92, 114.06)    0.78                21
 01/17/2024   16:59:10   (  69.80, -78.47) 01/17/2024   16:58:14  (  69.81, -78.45)    2.33                56
 01/20/2024   07:34:37   (  69.99,  62.39) 01/20/2024   07:35:46  (  69.97,  62.37)    2.41                69
 01/20/2024   08:25:18   ( -69.86,-130.09) 01/20/2024   08:25:16  ( -69.86,-130.14)    2.30                 2
 01/20/2024   09:15:58   (  69.52,  37.71) 01/20/2024   09:14:46  (  69.59,  37.12)   23.87                72
 01/22/2024   23:51:29   (  69.94, 178.25) 01/22/2024   23:52:14  (  69.92, 178.19)    2.98                45
 01/23/2024   00:42:11   ( -69.86, -14.31) 01/23/2024   00:41:43  ( -69.87, -14.24)    2.90                28
 01/25/2024   15:17:52   ( -70.86, 125.27) 01/25/2024   15:18:59  ( -70.77, 127.67)   88.44                67
 01/25/2024   16:08:20   (  69.91, -65.92) 01/25/2024   16:08:40  (  69.89, -65.96)    2.68                20
 01/25/2024   16:59:02   ( -69.82, 101.53) 01/25/2024   16:58:09  ( -69.84, 101.60)    3.45                53