Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 11 8.  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)
 11/08/2025   23:01:42   ( -70.23,  10.72) 11/08/2025   23:02:54  ( -70.17,  10.91)    9.37                72
 11/08/2025   23:52:24   (  70.03, 178.32) 11/08/2025   23:52:21  (  70.01, 178.33)    1.89                 3
 11/09/2025   00:43:04   ( -69.85, -14.09) 11/09/2025   00:41:51  ( -69.90, -14.19)    6.82                73
 11/11/2025   15:18:40   ( -70.09, 126.68) 11/11/2025   15:19:24  ( -70.10, 126.68)    1.60                44
 11/11/2025   16:09:25   (  70.00, -65.89) 11/11/2025   16:08:51  (  69.99, -65.82)    2.65                34
 11/14/2025   06:45:08   (  70.62,  74.27) 11/14/2025   06:46:18  (  70.48,  75.49)   47.83                70
 11/14/2025   07:35:41   ( -70.06,-117.54) 11/14/2025   07:35:54  ( -70.05,-117.51)    1.90                13
 11/14/2025   08:26:25   (  69.93,  49.97) 11/14/2025   08:25:21  (  69.94,  49.98)    0.66                64
 11/16/2025   23:01:59   (  70.09,-169.15) 11/16/2025   23:02:53  (  70.12,-169.16)    3.33                54
 11/16/2025   23:52:41   ( -70.00,  -1.69) 11/16/2025   23:52:23  ( -70.02,  -1.67)    2.20                18
 11/17/2025   00:43:11   (  69.13, 166.88) 11/17/2025   00:42:03  (  69.18, 164.84)   80.83                68
 11/19/2025   15:18:59   (  70.04, -53.32) 11/19/2025   15:19:22  (  70.05, -53.37)    2.07                23
 11/19/2025   16:09:40   ( -69.94, 114.15) 11/19/2025   16:08:51  ( -69.95, 114.12)    1.19                49