Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 8.  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)
 10/09/2025   06:20:15   (  70.86,  80.09) 10/09/2025   06:21:23  (  70.74,  82.06)   73.15                68
 10/09/2025   07:10:43   ( -70.07,-111.33) 10/09/2025   07:11:03  ( -70.08,-111.28)    2.53                20
 10/09/2025   08:01:27   (  69.92,  56.20) 10/09/2025   08:00:31  (  69.93,  56.15)    2.20                56
 10/11/2025   22:36:52   (  70.14,-162.97) 10/11/2025   22:38:03  (  70.12,-162.99)    2.79                71
 10/11/2025   23:27:33   ( -70.03,   4.52) 10/11/2025   23:27:33  ( -70.01,   4.49)    2.88                 0
 10/12/2025   00:18:14   (  69.73, 172.28) 10/12/2025   00:17:02  (  69.79, 171.83)   18.61                72
 10/14/2025   14:53:43   (  70.11, -47.14) 10/14/2025   14:54:32  (  70.11, -47.11)    1.00                49
 10/14/2025   15:44:24   ( -70.00, 120.35) 10/14/2025   15:44:02  ( -70.01, 120.37)    1.04                22
 10/14/2025   16:34:51   (  68.95, -70.83) 10/14/2025   16:33:45  (  69.01, -73.32)   99.61                66
 10/17/2025   07:10:34   (  70.09,  68.68) 10/17/2025   07:11:01  (  70.08,  68.73)    2.04                27
 10/17/2025   08:01:15   ( -69.98,-123.82) 10/17/2025   08:00:31  ( -69.98,-123.79)    1.34                44
 10/19/2025   22:36:47   ( -70.53,  16.48) 10/19/2025   22:37:58  ( -70.40,  17.44)   38.16                71
 10/19/2025   23:27:24   (  70.03,-175.43) 10/19/2025   23:27:30  (  70.01,-175.48)    2.37                 6
 10/20/2025   00:18:05   ( -69.91,  -7.93) 10/20/2025   00:17:00  ( -69.91,  -7.99)    2.25                65