Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 6.  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   (  70.87,  80.07) 10/09/2025   06:21:22  (  70.79,  82.13)   75.71                67
 10/09/2025   07:10:43   ( -70.08,-111.34) 10/09/2025   07:11:03  ( -70.08,-111.29)    2.07                20
 10/09/2025   08:01:27   (  69.93,  56.18) 10/09/2025   08:00:31  (  69.92,  56.13)    2.63                56
 10/11/2025   22:36:53   (  70.15,-162.99) 10/11/2025   22:38:03  (  70.16,-162.92)    2.78                70
 10/11/2025   23:27:34   ( -70.04,   4.50) 10/11/2025   23:27:33  ( -70.06,   4.56)    2.57                 1
 10/12/2025   00:18:15   (  69.74, 172.26) 10/12/2025   00:17:03  (  69.78, 171.82)   17.44                72
 10/14/2025   14:53:43   (  70.13, -47.16) 10/14/2025   14:54:32  (  70.11, -47.12)    3.19                49
 10/14/2025   15:44:24   ( -70.02, 120.33) 10/14/2025   15:44:02  ( -70.00, 120.36)    2.30                22
 10/14/2025   16:34:51   (  68.97, -70.85) 10/14/2025   16:33:45  (  69.00, -73.33)   98.81                66
 10/17/2025   07:10:33   (  70.06,  68.73) 10/17/2025   07:11:01  (  70.07,  68.71)    0.98                28
 10/17/2025   08:01:14   ( -69.95,-123.78) 10/17/2025   08:00:31  ( -69.97,-123.80)    2.37                43
 10/19/2025   22:36:47   ( -70.56,  16.43) 10/19/2025   22:37:57  ( -70.45,  17.50)   41.65                70
 10/19/2025   23:27:24   (  70.06,-175.48) 10/19/2025   23:27:29  (  70.06,-175.42)    2.29                 5
 10/20/2025   00:18:05   ( -69.94,  -7.98) 10/20/2025   00:16:59  ( -69.96,  -7.92)    2.76                66