Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 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)
 04/16/2025   06:19:37   (  70.25,  81.21) 04/16/2025   06:20:48  (  70.22,  81.21)    3.08                71
 04/16/2025   07:10:19   ( -70.13,-111.29) 04/16/2025   07:10:18  ( -70.11,-111.32)    3.08                 1
 04/16/2025   08:00:59   (  69.84,  56.47) 04/16/2025   07:59:47  (  69.89,  56.03)   17.98                72
 04/18/2025   22:36:26   (  70.17,-162.88) 04/18/2025   22:37:15  (  70.19,-162.95)    3.27                49
 04/18/2025   23:27:09   ( -70.11,   4.54) 04/18/2025   23:26:45  ( -70.08,   4.52)    3.45                24
 04/21/2025   14:53:16   (  70.16, -47.07) 04/21/2025   14:53:41  (  70.17, -47.10)    1.07                25
 04/21/2025   15:43:58   ( -70.04, 120.43) 04/21/2025   15:43:11  ( -70.05, 120.38)    2.63                47
 04/24/2025   06:19:26   ( -70.45, -99.04) 04/24/2025   06:20:37  ( -70.38, -98.55)   19.90                71
 04/24/2025   07:10:06   (  70.16,  68.72) 04/24/2025   07:10:06  (  70.15,  68.78)    2.48                 0
 04/24/2025   08:00:48   ( -70.04,-123.78) 04/24/2025   07:59:36  ( -70.04,-123.74)    1.30                72
 04/26/2025   22:36:10   ( -70.20,  17.15) 04/26/2025   22:37:03  ( -70.21,  17.11)    2.10                53
 04/26/2025   23:26:54   (  70.13,-175.43) 04/26/2025   23:26:30  (  70.10,-175.41)    3.22                24