Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 11 11.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2025   22:36:42   (  70.86,-164.00) 11/12/2025   22:37:50  (  70.74,-162.07)   72.15                68
 11/12/2025   23:27:11   ( -70.10,   4.53) 11/12/2025   23:27:30  ( -70.08,   4.60)    3.22                19
 11/13/2025   00:17:55   (  69.96, 172.05) 11/13/2025   00:16:57  (  69.97, 172.09)    2.17                58
 11/15/2025   14:53:29   (  70.12, -47.06) 11/15/2025   14:54:28  (  70.11, -47.11)    1.87                59
 11/15/2025   15:44:11   ( -70.03, 120.38) 11/15/2025   15:43:57  ( -70.05, 120.45)    3.35                14
 11/15/2025   16:34:44   (  69.32, -71.26) 11/15/2025   16:33:35  (  69.34, -72.89)   64.01                69
 11/18/2025   07:10:29   (  70.07,  68.76) 11/18/2025   07:10:54  (  70.09,  68.77)    2.78                25
 11/18/2025   08:01:11   ( -69.98,-123.78) 11/18/2025   08:00:24  ( -69.98,-123.75)    1.44                47
 11/20/2025   22:36:44   ( -70.15,  17.08) 11/20/2025   22:37:52  ( -70.15,  17.10)    1.07                68
 11/20/2025   23:27:28   (  70.03,-175.43) 11/20/2025   23:27:19  (  70.04,-175.42)    0.96                 9
 11/21/2025   00:18:05   ( -69.67,  -7.57) 11/21/2025   00:16:53  ( -69.71,  -8.24)   26.06                72
 11/23/2025   14:53:44   ( -70.11, 132.88) 11/23/2025   14:54:17  ( -70.12, 132.95)    2.49                33
 11/23/2025   15:44:28   (  70.01, -59.65) 11/23/2025   15:43:44  (  70.00, -59.57)    3.05                44