Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 27.  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)
 10/29/2025   06:45:01   (  70.58,  74.34) 10/29/2025   06:46:11  (  70.45,  75.47)   44.25                70
 10/29/2025   07:35:34   ( -70.05,-117.50) 10/29/2025   07:35:46  ( -70.06,-117.46)    2.17                12
 10/29/2025   08:26:18   (  69.91,  50.02) 10/29/2025   08:25:14  (  69.90,  49.96)    2.48                64
 10/31/2025   23:01:42   (  70.09,-169.09) 10/31/2025   23:02:43  (  70.11,-169.13)    2.32                61
 10/31/2025   23:52:23   ( -69.97,  -1.59) 10/31/2025   23:52:13  ( -70.00,  -1.66)    3.41                10
 11/01/2025   00:42:58   (  69.36, 166.61) 11/01/2025   00:41:48  (  69.44, 165.23)   54.95                70
 11/03/2025   15:18:31   (  70.08, -53.29) 11/03/2025   15:19:08  (  70.06, -53.30)    2.87                37
 11/03/2025   16:09:12   ( -69.96, 114.22) 11/03/2025   16:08:38  ( -69.95, 114.18)    1.91                34
 11/06/2025   06:44:48   ( -70.78,-105.91) 11/06/2025   06:45:56  ( -70.70,-104.11)   66.71                68
 11/06/2025   07:35:20   (  70.04,  62.58) 11/06/2025   07:35:33  (  70.04,  62.56)    0.82                13
 11/06/2025   08:26:01   ( -69.91,-129.90) 11/06/2025   08:25:03  ( -69.93,-129.95)    3.29                58
 11/08/2025   23:01:25   ( -70.11,  10.96) 11/08/2025   23:02:31  ( -70.10,  10.91)    2.39                66
 11/08/2025   23:52:09   (  70.00, 178.44) 11/08/2025   23:51:58  (  69.98, 178.39)    2.83                11
 11/09/2025   00:42:44   ( -69.54, -13.57) 11/09/2025   00:41:33  ( -69.60, -14.50)   36.91                71