Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 3.  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)
 10/03/2025   22:37:00   ( -70.13,  17.00) 10/03/2025   22:38:01  ( -70.13,  17.04)    1.54                61
 10/03/2025   23:27:44   (  69.99,-175.47) 10/03/2025   23:27:29  (  69.98,-175.53)    2.65                15
 10/04/2025   00:18:16   ( -69.40,  -7.29) 10/04/2025   00:17:06  ( -69.48,  -8.58)   51.22                70
 10/06/2025   14:53:51   ( -70.08, 132.87) 10/06/2025   14:54:32  ( -70.11, 132.88)    3.00                41
 10/06/2025   15:44:36   (  69.99, -59.69) 10/06/2025   15:43:59  (  70.00, -59.62)    2.95                37
 10/09/2025   06:20:14   (  70.84,  80.12) 10/09/2025   06:21:22  (  70.74,  82.06)   71.86                68
 10/09/2025   07:10:42   ( -70.05,-111.29) 10/09/2025   07:11:03  ( -70.03,-111.35)    2.65                21
 10/09/2025   08:01:27   (  69.96,  56.15) 10/09/2025   08:00:29  (  69.98,  56.22)    3.55                58
 10/11/2025   22:36:52   (  70.14,-162.97) 10/11/2025   22:38:02  (  70.12,-162.97)    2.67                70
 10/11/2025   23:27:33   ( -70.03,   4.53) 10/11/2025   23:27:32  ( -70.01,   4.51)    1.68                 1
 10/12/2025   00:18:14   (  69.73, 172.28) 10/12/2025   00:17:01  (  69.79, 171.84)   18.18                73
 10/14/2025   14:53:41   (  70.09, -47.09) 10/14/2025   14:54:29  (  70.10, -47.11)    1.66                48
 10/14/2025   15:44:22   ( -69.97, 120.40) 10/14/2025   15:43:59  ( -70.00, 120.37)    3.17                23
 10/17/2025   07:10:32   (  70.10,  68.68) 10/17/2025   07:10:56  (  70.08,  68.76)    3.45                24
 10/17/2025   08:01:13   ( -69.98,-123.82) 10/17/2025   08:00:26  ( -69.98,-123.75)    2.62                47