Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 10 23.  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)
 10/25/2025   07:10:20   ( -70.11,-111.29) 10/25/2025   07:11:01  ( -70.12,-111.23)    2.25                41
 10/25/2025   08:01:04   (  69.97,  56.24) 10/25/2025   08:00:29  (  69.96,  56.19)    2.30                35
 10/27/2025   22:36:43   (  70.98,-164.21) 10/27/2025   22:37:49  (  70.87,-161.87)   85.94                66
 10/27/2025   23:27:09   ( -70.08,   4.56) 10/27/2025   23:27:32  ( -70.05,   4.55)    3.21                23
 10/28/2025   00:17:53   (  69.94, 172.07) 10/28/2025   00:16:59  (  69.94, 172.05)    1.13                54
 10/30/2025   14:53:20   (  70.28, -47.28) 10/30/2025   14:54:31  (  70.22, -46.96)   13.65                71
 10/30/2025   15:43:59   ( -70.06, 120.39) 10/30/2025   15:44:02  ( -70.06, 120.44)    2.25                 3
 10/30/2025   16:34:43   (  69.92, -72.10) 10/30/2025   16:33:29  (  69.95, -72.07)    3.32                74
 11/02/2025   07:10:07   (  70.11,  68.77) 11/02/2025   07:11:02  (  70.14,  68.80)    2.85                55
 11/02/2025   08:00:48   ( -69.99,-123.72) 11/02/2025   08:00:33  ( -69.98,-123.79)    2.83                15
 11/02/2025   08:51:19   (  69.17,  44.78) 11/02/2025   08:50:11  (  69.26,  42.87)   76.02                68
 11/04/2025   23:26:56   (  70.06,-175.35) 11/04/2025   23:27:32  (  70.08,-175.41)    2.58                36
 11/05/2025   00:17:38   ( -69.99,  -7.92) 11/05/2025   00:17:02  ( -69.98,  -7.91)    0.78                36