Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 7 28.  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)
 07/30/2025   14:28:58   ( -70.10, 139.07) 07/30/2025   14:29:27  ( -70.10, 139.10)    1.37                29
 07/30/2025   15:19:42   (  70.01, -53.48) 07/30/2025   15:18:54  (  69.99, -53.40)    3.22                48
 08/02/2025   05:55:14   (  70.35,  87.14) 08/02/2025   05:56:25  (  70.26,  87.58)   19.42                71
 08/02/2025   06:45:53   ( -70.07,-105.12) 08/02/2025   06:45:57  ( -70.04,-105.09)    3.24                 4
 08/02/2025   07:36:36   (  69.93,  62.40) 08/02/2025   07:35:24  (  69.93,  62.40)    0.44                72
 08/04/2025   22:12:05   (  70.12,-156.74) 08/04/2025   22:12:56  (  70.12,-156.72)    0.87                51
 08/04/2025   23:02:47   ( -69.99,  10.76) 08/04/2025   23:02:26  ( -70.02,  10.76)    3.04                21
 08/04/2025   23:53:14   (  69.01, 179.50) 08/04/2025   23:52:08  (  69.08, 177.13)   94.59                66
 08/07/2025   14:28:59   (  70.11, -40.95) 08/07/2025   14:29:24  (  70.08, -40.90)    3.30                25
 08/07/2025   15:19:41   ( -69.98, 126.56) 08/07/2025   15:18:54  ( -69.98, 126.59)    1.26                47
 08/10/2025   05:55:13   ( -70.33, -92.83) 08/10/2025   05:56:24  ( -70.25, -92.42)   18.06                71
 08/10/2025   06:45:53   (  70.04,  74.92) 08/10/2025   06:45:53  (  70.02,  74.90)    3.05                 0
 08/10/2025   07:36:35   ( -69.91,-117.57) 08/10/2025   07:35:23  ( -69.92,-117.60)    1.54                72