Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 9.  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   (  70.07,  74.91) 09/11/2025   06:46:16  (  70.06,  74.89)    1.40                30
 09/11/2025   07:36:28   ( -69.97,-117.63) 09/11/2025   07:35:46  ( -69.94,-117.64)    3.51                42
 09/13/2025   22:12:03   ( -70.56,  22.61) 09/13/2025   22:13:13  ( -70.44,  23.69)   41.92                70
 09/13/2025   23:02:39   (  70.03,-169.25) 09/13/2025   23:02:46  (  70.01,-169.29)    2.35                 7
 09/13/2025   23:53:20   ( -69.93,  -1.79) 09/13/2025   23:52:14  ( -69.95,  -1.74)    3.01                66
 09/16/2025   14:28:47   ( -70.11, 139.10) 09/16/2025   14:29:47  ( -70.11, 139.09)    0.63                60
 09/16/2025   15:19:31   (  69.99, -53.42) 09/16/2025   15:19:14  (  70.00, -53.42)    0.92                17
 09/16/2025   16:10:03   ( -69.37, 114.81) 09/16/2025   16:08:53  ( -69.40, 113.39)   55.82                70
 09/19/2025   06:45:40   ( -70.08,-105.08) 09/19/2025   06:46:16  ( -70.08,-105.07)    0.64                36
 09/19/2025   07:36:24   (  69.97,  62.40) 09/19/2025   07:35:43  (  69.97,  62.42)    1.18                41
 09/21/2025   22:11:59   (  70.57,-157.39) 09/21/2025   22:13:09  (  70.47,-156.25)   43.56                70
 09/21/2025   23:02:33   ( -70.06,  10.73) 09/21/2025   23:02:45  ( -70.04,  10.76)    2.57                12
 09/21/2025   23:53:17   (  69.94, 178.21) 09/21/2025   23:52:12  (  69.92, 178.24)    2.45                65