Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 31.  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   (  71.09,  85.93) 09/03/2025   05:56:29  (  71.01,  88.68)   99.80                65
 09/03/2025   06:45:49   ( -70.09,-105.14) 09/03/2025   06:46:14  ( -70.08,-105.08)    2.89                25
 09/03/2025   07:36:32   (  69.94,  62.40) 09/03/2025   07:35:42  (  69.92,  62.35)    3.07                50
 09/05/2025   22:12:03   (  70.30,-157.00) 09/05/2025   22:13:14  (  70.21,-156.64)   16.86                71
 09/05/2025   23:02:42   ( -70.04,  10.72) 09/05/2025   23:02:45  ( -70.05,  10.75)    1.61                 3
 09/05/2025   23:53:25   (  69.89, 178.26) 09/05/2025   23:52:13  (  69.89, 178.17)    3.21                72
 09/08/2025   14:28:53   (  70.10, -40.91) 09/08/2025   14:29:46  (  70.09, -40.94)    1.79                53
 09/08/2025   15:19:35   ( -69.99, 126.57) 09/08/2025   15:19:16  ( -69.98, 126.54)    1.86                19
 09/08/2025   16:10:04   (  69.09, -64.82) 09/08/2025   16:08:57  (  69.10, -67.01)   86.71                67
 09/11/2025   06:45:45   (  70.06,  74.92) 09/11/2025   06:46:14  (  70.09,  74.94)    3.18                29
 09/11/2025   07:36:27   ( -69.96,-117.60) 09/11/2025   07:35:44  ( -69.98,-117.57)    3.13                43
 09/13/2025   22:12:01   ( -70.50,  22.71) 09/13/2025   22:13:12  ( -70.38,  23.61)   36.13                71
 09/13/2025   23:02:38   (  70.03,-169.25) 09/13/2025   23:02:43  (  70.05,-169.22)    2.54                 5
 09/13/2025   23:53:20   ( -69.93,  -1.78) 09/13/2025   23:52:13  ( -69.95,  -1.73)    2.80                67