Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 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)
 09/24/2025   14:28:43   (  70.10, -40.88) 09/24/2025   14:29:49  (  70.11, -40.92)    1.86                66
 09/24/2025   15:19:25   ( -70.03, 126.55) 09/24/2025   15:19:18  ( -70.05, 126.63)    3.30                 7
 09/24/2025   16:10:02   (  69.53, -65.39) 09/24/2025   16:08:51  (  69.61, -66.33)   37.56                71
 09/27/2025   06:45:36   (  70.10,  74.91) 09/27/2025   06:46:19  (  70.08,  74.92)    2.19                43
 09/27/2025   07:36:17   ( -69.98,-117.59) 09/27/2025   07:35:49  ( -69.97,-117.60)    0.83                28
 09/29/2025   22:12:01   ( -71.08,  21.80) 09/29/2025   22:13:07  ( -70.95,  24.45)   97.11                66
 09/29/2025   23:02:28   (  70.06,-169.25) 09/29/2025   23:02:48  (  70.08,-169.20)    2.76                20
 09/29/2025   23:53:09   ( -69.94,  -1.74) 09/29/2025   23:52:19  ( -69.91,  -1.80)    3.19                50
 10/02/2025   14:28:37   ( -70.27, 138.91) 10/02/2025   14:29:48  ( -70.20, 139.22)   13.76                71
 10/02/2025   15:19:19   (  70.03, -53.42) 10/02/2025   15:19:16  (  70.04, -53.37)    1.89                 3
 10/02/2025   16:10:00   ( -69.91, 114.08) 10/02/2025   16:08:46  ( -69.93, 114.11)    2.72                74
 10/05/2025   06:45:26   ( -70.09,-105.04) 10/05/2025   06:46:18  ( -70.07,-105.08)    2.81                52
 10/05/2025   07:36:10   (  69.96,  62.47) 10/05/2025   07:35:45  (  69.96,  62.40)    2.68                25