Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 8 29.  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   ( -70.09, 139.10) 08/31/2025   14:29:42  ( -70.11, 139.09)    2.23                47
 08/31/2025   15:19:39   (  69.99, -53.45) 08/31/2025   15:19:10  (  69.96, -53.47)    3.42                29
 09/03/2025   05:55:24   (  71.07,  85.97) 09/03/2025   05:56:29  (  70.96,  88.62)   96.71                65
 09/03/2025   06:45:49   ( -70.07,-105.10) 09/03/2025   06:46:13  ( -70.08,-105.07)    1.50                24
 09/03/2025   07:36:32   (  69.92,  62.43) 09/03/2025   07:35:41  (  69.93,  62.37)    2.62                51
 09/05/2025   22:12:02   (  70.22,-156.88) 09/05/2025   22:13:13  (  70.20,-156.65)    9.09                71
 09/05/2025   23:02:41   ( -70.01,  10.76) 09/05/2025   23:02:43  ( -70.02,  10.73)    1.78                 2
 09/05/2025   23:53:24   (  69.86, 178.30) 09/05/2025   23:52:11  (  69.87, 178.16)    5.25                73
 09/08/2025   14:28:53   (  70.12, -40.94) 09/08/2025   14:29:43  (  70.11, -40.89)    1.95                50
 09/08/2025   15:19:35   ( -70.01, 126.54) 09/08/2025   15:19:13  ( -69.99, 126.57)    2.36                22
 09/08/2025   16:10:02   (  69.01, -64.70) 09/08/2025   16:08:55  (  69.07, -67.03)   92.88                67
 09/11/2025   06:45:46   (  70.07,  74.91) 09/11/2025   06:46:13  (  70.05,  74.91)    2.02                27
 09/11/2025   07:36:28   ( -69.97,-117.62) 09/11/2025   07:35:43  ( -69.94,-117.62)    3.33                45