Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 14.  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)
 10/17/2025   07:10:33   (  70.07,  68.71) 10/17/2025   07:11:01  (  70.06,  68.69)    1.48                28
 10/17/2025   08:01:14   ( -69.96,-123.80) 10/17/2025   08:00:31  ( -69.95,-123.83)    2.16                43
 10/19/2025   22:36:46   ( -70.52,  16.50) 10/19/2025   22:37:57  ( -70.43,  17.48)   37.71                71
 10/19/2025   23:27:24   (  70.06,-175.48) 10/19/2025   23:27:29  (  70.05,-175.43)    2.24                 5
 10/20/2025   00:18:05   ( -69.95,  -8.00) 10/20/2025   00:16:59  ( -69.95,  -7.95)    2.01                66
 10/22/2025   14:53:30   ( -70.15, 132.87) 10/22/2025   14:54:30  ( -70.13, 132.92)    2.89                60
 10/22/2025   15:44:14   (  70.01, -59.61) 10/22/2025   15:43:57  (  70.02, -59.59)    1.36                17
 10/22/2025   16:34:46   ( -69.42, 108.58) 10/22/2025   16:33:35  ( -69.47, 107.29)   50.48                71
 10/25/2025   07:10:20   ( -70.10,-111.27) 10/25/2025   07:10:58  ( -70.07,-111.27)    3.61                38
 10/25/2025   08:01:04   (  69.97,  56.24) 10/25/2025   08:00:25  (  69.95,  56.21)    1.94                39
 10/27/2025   22:36:37   (  70.66,-163.68) 10/27/2025   22:37:46  (  70.57,-162.28)   52.38                69
 10/27/2025   23:27:09   ( -70.06,   4.58) 10/27/2025   23:27:24  ( -70.03,   4.56)    3.49                15
 10/28/2025   00:17:53   (  69.93, 172.09) 10/28/2025   00:16:51  (  69.91, 172.05)    2.62                62