Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 28.  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,  74.35) 10/29/2025   06:46:11  (  70.46,  75.48)   43.93                70
 10/29/2025   07:35:34   ( -70.05,-117.50) 10/29/2025   07:35:46  ( -70.07,-117.45)    2.89                12
 10/29/2025   08:26:18   (  69.90,  50.03) 10/29/2025   08:25:14  (  69.91,  49.97)    2.28                64
 10/31/2025   23:01:43   (  70.14,-169.17) 10/31/2025   23:02:43  (  70.11,-169.12)    3.22                60
 10/31/2025   23:52:24   ( -70.02,  -1.67) 10/31/2025   23:52:13  ( -70.00,  -1.65)    2.50                11
 11/01/2025   00:42:58   (  69.36, 166.62) 11/01/2025   00:41:49  (  69.40, 165.17)   57.09                69
 11/03/2025   15:18:31   (  70.08, -53.28) 11/03/2025   15:19:08  (  70.07, -53.29)    1.12                37
 11/03/2025   16:09:12   ( -69.96, 114.22) 11/03/2025   16:08:38  ( -69.96, 114.19)    1.16                34
 11/06/2025   06:44:48   ( -70.78,-105.91) 11/06/2025   06:45:57  ( -70.66,-104.17)   65.31                69
 11/06/2025   07:35:20   (  70.03,  62.59) 11/06/2025   07:35:33  (  70.05,  62.58)    2.03                13
 11/06/2025   08:26:02   ( -69.96,-129.98) 11/06/2025   08:25:03  ( -69.94,-129.93)    2.35                59
 11/08/2025   23:01:25   ( -70.11,  10.96) 11/08/2025   23:02:31  ( -70.12,  10.93)    1.07                66
 11/08/2025   23:52:09   (  69.99, 178.44) 11/08/2025   23:51:58  (  70.00, 178.41)    1.25                11
 11/09/2025   00:42:44   ( -69.54, -13.57) 11/09/2025   00:41:33  ( -69.62, -14.48)   36.30                71