Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 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)
 10/31/2025   23:01:42   (  70.12,-169.14) 10/31/2025   23:02:42  (  70.13,-169.09)    2.16                60
 10/31/2025   23:52:23   ( -70.01,  -1.65) 10/31/2025   23:52:12  ( -70.02,  -1.62)    1.62                11
 11/01/2025   00:42:58   (  69.39, 166.57) 11/01/2025   00:41:48  (  69.42, 165.19)   53.80                70
 11/03/2025   15:18:31   (  70.06, -53.25) 11/03/2025   15:19:09  (  70.04, -53.33)    3.71                38
 11/03/2025   16:09:13   ( -69.99, 114.17) 11/03/2025   16:08:38  ( -69.99, 114.23)    2.38                35
 11/06/2025   06:44:49   ( -70.81,-105.96) 11/06/2025   06:45:57  ( -70.69,-104.13)   68.65                68
 11/06/2025   07:35:20   (  70.01,  62.62) 11/06/2025   07:35:34  (  70.03,  62.55)    3.52                14
 11/06/2025   08:26:02   ( -69.94,-129.95) 11/06/2025   08:25:04  ( -69.92,-129.97)    1.80                58
 11/08/2025   23:01:26   ( -70.14,  10.92) 11/08/2025   23:02:32  ( -70.10,  10.91)    3.60                66
 11/08/2025   23:52:10   (  70.02, 178.41) 11/08/2025   23:51:59  (  69.99, 178.39)    3.46                11
 11/09/2025   00:42:45   ( -69.57, -13.61) 11/09/2025   00:41:33  ( -69.66, -14.43)   33.37                72
 11/11/2025   15:18:14   ( -70.09, 126.78) 11/11/2025   15:18:55  ( -70.09, 126.79)    0.71                41
 11/11/2025   16:08:58   (  69.98, -65.74) 11/11/2025   16:08:22  (  69.97, -65.73)    1.42                36