Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 9 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)
 09/29/2025   22:12:01   ( -71.08,  21.79) 09/29/2025   22:13:06  ( -70.99,  24.52)   99.10                65
 09/29/2025   23:02:28   (  70.06,-169.25) 09/29/2025   23:02:48  (  70.07,-169.21)    2.09                20
 09/29/2025   23:53:09   ( -69.94,  -1.75) 09/29/2025   23:52:18  ( -69.96,  -1.74)    2.02                51
 10/02/2025   14:28:36   ( -70.22, 138.98) 10/02/2025   14:29:48  ( -70.18, 139.19)    8.79                72
 10/02/2025   15:19:19   (  70.03, -53.42) 10/02/2025   15:19:16  (  70.02, -53.40)    1.32                 3
 10/02/2025   16:09:59   ( -69.86, 114.16) 10/02/2025   16:08:47  ( -69.86, 114.01)    5.72                72
 10/05/2025   06:45:26   ( -70.09,-105.04) 10/05/2025   06:46:17  ( -70.09,-105.05)    0.17                51
 10/05/2025   07:36:10   (  69.96,  62.47) 10/05/2025   07:35:44  (  69.98,  62.44)    3.08                26
 10/05/2025   08:26:35   ( -68.99,-128.82) 10/05/2025   08:25:29  ( -69.05,-131.18)   94.40                66
 10/07/2025   23:02:18   ( -70.09,  10.75) 10/07/2025   23:02:44  ( -70.07,  10.82)    2.82                26
 10/07/2025   23:53:02   (  69.95, 178.27) 10/07/2025   23:52:11  (  69.96, 178.30)    1.67                51
 10/10/2025   14:28:29   (  70.21, -40.97) 10/10/2025   14:29:40  (  70.17, -40.78)    8.40                71
 10/10/2025   15:19:09   ( -70.04, 126.61) 10/10/2025   15:19:11  ( -70.01, 126.63)    2.85                 2
 10/10/2025   16:09:51   (  69.80, -65.72) 10/10/2025   16:08:39  (  69.84, -65.97)   10.76                72