Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 8.  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)
 09/11/2025   06:45:46   (  70.06,  74.92) 09/11/2025   06:46:16  (  70.06,  74.90)    0.96                30
 09/11/2025   07:36:28   ( -69.97,-117.62) 09/11/2025   07:35:46  ( -69.95,-117.63)    2.44                42
 09/13/2025   22:12:02   ( -70.55,  22.62) 09/13/2025   22:13:12  ( -70.44,  23.69)   41.57                70
 09/13/2025   23:02:38   (  70.02,-169.24) 09/13/2025   23:02:45  (  70.01,-169.29)    2.65                 7
 09/13/2025   23:53:20   ( -69.93,  -1.79) 09/13/2025   23:52:14  ( -69.95,  -1.74)    2.91                66
 09/16/2025   14:28:47   ( -70.10, 139.10) 09/16/2025   14:29:47  ( -70.09, 139.07)    1.67                60
 09/16/2025   15:19:31   (  69.99, -53.42) 09/16/2025   15:19:14  (  69.99, -53.44)    1.02                17
 09/16/2025   16:10:02   ( -69.32, 114.89) 09/16/2025   16:08:53  ( -69.38, 113.37)   59.99                69
 09/19/2025   06:45:40   ( -70.08,-105.08) 09/19/2025   06:46:16  ( -70.05,-105.10)    3.07                36
 09/19/2025   07:36:24   (  69.97,  62.40) 09/19/2025   07:35:43  (  69.94,  62.39)    2.86                41
 09/21/2025   22:11:59   (  70.57,-157.39) 09/21/2025   22:13:09  (  70.42,-156.32)   43.49                70
 09/21/2025   23:02:33   ( -70.06,  10.72) 09/21/2025   23:02:44  ( -70.04,  10.77)    2.79                11
 09/21/2025   23:53:17   (  69.95, 178.20) 09/21/2025   23:52:11  (  69.93, 178.26)    2.92                66