Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 10 14.  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)
 10/15/2025   23:02:08   (  70.07,-169.19) 10/15/2025   23:02:54  (  70.07,-169.23)    1.87                46
 10/15/2025   23:52:49   ( -69.97,  -1.71) 10/15/2025   23:52:24  ( -69.96,  -1.76)    2.27                25
 10/18/2025   15:18:59   (  70.06, -53.38) 10/18/2025   15:19:23  (  70.07, -53.35)    1.55                24
 10/18/2025   16:09:40   ( -69.95, 114.11) 10/18/2025   16:08:53  ( -69.96, 114.13)    1.47                47
 10/21/2025   06:45:10   ( -70.46,-105.52) 10/21/2025   06:46:21  ( -70.32,-104.76)   32.49                71
 10/21/2025   07:35:49   (  70.06,  62.42) 10/21/2025   07:35:51  (  70.04,  62.49)    3.25                 2
 10/21/2025   08:26:30   ( -69.95,-130.09) 10/21/2025   08:25:21  ( -69.94,-130.02)    2.87                69
 10/23/2025   23:01:54   ( -70.09,  10.85) 10/23/2025   23:02:53  ( -70.10,  10.81)    1.40                59
 10/23/2025   23:52:39   (  70.01, 178.28) 10/23/2025   23:52:20  (  69.98, 178.30)    2.88                19
 10/24/2025   00:43:09   ( -69.31, -13.37) 10/24/2025   00:41:59  ( -69.39, -14.89)   59.91                70
 10/26/2025   15:18:44   ( -70.05, 126.71) 10/26/2025   15:19:21  ( -70.07, 126.66)    2.59                37
 10/26/2025   16:09:29   (  69.97, -65.87) 10/26/2025   16:08:48  (  69.95, -65.86)    2.36                41