Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 5.  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)
 11/06/2025   07:35:24   (  70.07,  62.52) 11/06/2025   07:35:51  (  70.05,  62.51)    1.73                27
 11/06/2025   08:26:05   ( -69.95,-129.98) 11/06/2025   08:25:21  ( -69.94,-130.01)    1.17                44
 11/08/2025   23:01:42   ( -70.22,  10.72) 11/08/2025   23:02:54  ( -70.19,  10.93)    8.96                72
 11/08/2025   23:52:25   (  70.03, 178.32) 11/08/2025   23:52:22  (  70.03, 178.35)    0.95                 3
 11/09/2025   00:43:05   ( -69.90, -14.17) 11/09/2025   00:41:51  ( -69.92, -14.17)    1.94                74
 11/11/2025   15:18:40   ( -70.08, 126.69) 11/11/2025   15:19:25  ( -70.09, 126.66)    1.16                45
 11/11/2025   16:09:25   (  70.00, -65.88) 11/11/2025   16:08:52  (  69.98, -65.85)    2.78                33
 11/14/2025   06:45:09   (  70.66,  74.20) 11/14/2025   06:46:18  (  70.55,  75.59)   52.74                69
 11/14/2025   07:35:41   ( -70.05,-117.52) 11/14/2025   07:35:55  ( -70.07,-117.49)    2.18                14
 11/14/2025   08:26:25   (  69.92,  49.98) 11/14/2025   08:25:22  (  69.95,  50.00)    3.46                63
 11/16/2025   23:02:00   (  70.12,-169.19) 11/16/2025   23:02:55  (  70.12,-169.17)    1.12                55
 11/16/2025   23:52:42   ( -70.03,  -1.73) 11/16/2025   23:52:25  ( -70.02,  -1.67)    2.38                17
 11/17/2025   00:43:12   (  69.16, 166.84) 11/17/2025   00:42:04  (  69.24, 164.91)   76.54                68
 11/19/2025   15:19:00   (  70.06, -53.35) 11/19/2025   15:19:25  (  70.04, -53.39)    2.17                25
 11/19/2025   16:09:41   ( -69.96, 114.12) 11/19/2025   16:08:54  ( -69.95, 114.11)    1.33                47