Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 30.  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)
 08/31/2025   14:28:55   ( -70.11, 139.06) 08/31/2025   14:29:42  ( -70.12, 139.11)    2.01                47
 08/31/2025   15:19:38   (  69.96, -53.41) 08/31/2025   15:19:10  (  69.97, -53.47)    2.31                28
 09/03/2025   06:45:49   ( -70.10,-105.15) 09/03/2025   06:46:14  ( -70.08,-105.08)    3.42                25
 09/03/2025   07:36:32   (  69.95,  62.39) 09/03/2025   07:35:41  (  69.98,  62.42)    3.22                51
 09/05/2025   22:12:03   (  70.31,-157.01) 09/05/2025   22:13:14  (  70.22,-156.63)   17.13                71
 09/05/2025   23:02:42   ( -70.04,  10.72) 09/05/2025   23:02:45  ( -70.06,  10.77)    2.64                 3
 09/05/2025   23:53:25   (  69.89, 178.25) 09/05/2025   23:52:13  (  69.90, 178.19)    2.59                72
 09/08/2025   14:28:53   (  70.10, -40.91) 09/08/2025   14:29:46  (  70.11, -40.91)    1.27                53
 09/08/2025   15:19:35   ( -69.99, 126.57) 09/08/2025   15:19:16  ( -70.00, 126.57)    1.29                19
 09/08/2025   16:10:04   (  69.10, -64.83) 09/08/2025   16:08:57  (  69.12, -66.98)   85.33                67
 09/11/2025   06:45:45   (  70.06,  74.92) 09/11/2025   06:46:15  (  70.08,  74.93)    2.07                30
 09/11/2025   07:36:27   ( -69.95,-117.60) 09/11/2025   07:35:45  ( -69.97,-117.59)    2.20                42