Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 3.  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)
 09/03/2025   05:55:24   (  71.08,  85.94) 09/03/2025   05:56:30  (  70.97,  88.61)   97.35                66
 09/03/2025   06:45:49   ( -70.09,-105.13) 09/03/2025   06:46:14  ( -70.08,-105.07)    2.34                25
 09/03/2025   07:36:32   (  69.93,  62.41) 09/03/2025   07:35:42  (  69.93,  62.36)    1.98                50
 09/05/2025   22:12:03   (  70.30,-156.99) 09/05/2025   22:13:14  (  70.21,-156.64)   16.06                71
 09/05/2025   23:02:42   ( -70.03,  10.73) 09/05/2025   23:02:45  ( -70.05,  10.75)    1.62                 3
 09/05/2025   23:53:25   (  69.88, 178.27) 09/05/2025   23:52:13  (  69.89, 178.18)    3.67                72
 09/08/2025   14:28:52   (  70.09, -40.90) 09/08/2025   14:29:45  (  70.07, -40.96)    3.17                53
 09/08/2025   15:19:34   ( -69.99, 126.57) 09/08/2025   15:19:14  ( -70.02, 126.59)    3.09                20
 09/08/2025   16:10:02   (  69.04, -64.74) 09/08/2025   16:08:55  (  69.14, -66.95)   88.41                67
 09/11/2025   06:45:45   (  70.06,  74.92) 09/11/2025   06:46:14  (  70.05,  74.90)    1.37                29
 09/11/2025   07:36:27   ( -69.96,-117.60) 09/11/2025   07:35:44  ( -69.95,-117.62)    1.68                43
 09/13/2025   22:12:00   ( -70.46,  22.78) 09/13/2025   22:13:11  ( -70.37,  23.60)   32.10                71
 09/13/2025   23:02:38   (  70.04,-169.26) 09/13/2025   23:02:42  (  70.04,-169.23)    1.51                 4
 09/13/2025   23:53:20   ( -69.94,  -1.80) 09/13/2025   23:52:12  ( -69.94,  -1.74)    1.98                68
 09/16/2025   14:28:47   ( -70.13, 139.06) 09/16/2025   14:29:43  ( -70.11, 139.11)    3.18                56
 09/16/2025   15:19:30   (  69.97, -53.39) 09/16/2025   15:19:10  (  69.99, -53.41)    2.18                20