Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 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)
 11/24/2025   23:02:13   ( -70.07,  10.83) 11/24/2025   23:02:53  ( -70.06,  10.76)    2.91                40
 11/24/2025   23:52:57   (  69.96, 178.31) 11/24/2025   23:52:20  (  69.96, 178.26)    1.96                37
 11/27/2025   14:28:38   (  70.52, -41.44) 11/27/2025   14:29:49  (  70.41, -40.50)   37.26                71
 11/27/2025   15:19:13   ( -70.05, 126.62) 11/27/2025   15:19:24  ( -70.02, 126.58)    3.13                11
 11/27/2025   16:09:57   (  69.94, -65.91) 11/27/2025   16:08:51  (  69.92, -65.92)    2.38                66
 11/30/2025   06:45:31   (  70.14,  74.91) 11/30/2025   06:46:24  (  70.12,  74.96)    3.26                53
 11/30/2025   07:36:13   ( -70.03,-117.61) 11/30/2025   07:35:54  ( -70.01,-117.56)    2.71                19
 11/30/2025   08:26:42   (  69.13,  51.01) 11/30/2025   08:25:34  (  69.19,  48.97)   81.21                68
 12/02/2025   23:02:29   (  70.09,-169.25) 12/02/2025   23:02:53  (  70.08,-169.21)    1.70                24
 12/02/2025   23:53:11   ( -69.97,  -1.76) 12/02/2025   23:52:23  ( -69.98,  -1.73)    1.44                48
 12/05/2025   14:28:44   ( -70.13, 139.13) 12/05/2025   14:29:56  ( -70.13, 139.09)    1.49                72
 12/05/2025   15:19:28   (  70.04, -53.43) 12/05/2025   15:19:23  (  70.02, -53.42)    2.51                 5
 12/05/2025   16:10:07   ( -69.76, 114.31) 12/05/2025   16:08:55  ( -69.81, 113.91)   16.33                72