Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 16.  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)
 05/18/2025   06:19:53   (  70.17,  81.24) 05/18/2025   06:20:41  (  70.20,  81.28)    3.06                48
 05/18/2025   07:10:35   ( -70.09,-111.32) 05/18/2025   07:10:11  ( -70.08,-111.24)    2.88                24
 05/20/2025   21:46:23   ( -71.14,  28.12) 05/20/2025   21:47:29  ( -71.06,  30.83)   98.19                66
 05/20/2025   22:36:50   (  70.13,-162.93) 05/20/2025   22:37:11  (  70.14,-162.91)    2.13                21
 05/20/2025   23:27:32   ( -70.04,   4.51) 05/20/2025   23:26:41  ( -70.03,   4.57)    2.36                51
 05/23/2025   14:03:03   ( -70.21, 145.39) 05/23/2025   14:04:13  ( -70.23, 145.46)    3.59                70
 05/23/2025   14:53:47   (  70.08, -47.10) 05/23/2025   14:53:41  (  70.07, -47.13)    1.74                 6
 05/23/2025   15:44:26   ( -69.84, 120.58) 05/23/2025   15:43:13  ( -69.85, 120.20)   14.34                73
 05/26/2025   06:19:59   ( -70.12, -98.71) 05/26/2025   06:20:43  ( -70.14, -98.78)    3.32                44
 05/26/2025   07:10:44   (  70.05,  68.71) 05/26/2025   07:10:10  (  70.03,  68.71)    1.87                34
 05/28/2025   21:46:24   (  70.75,-151.27) 05/28/2025   21:47:33  (  70.63,-149.81)   55.43                69
 05/28/2025   22:36:55   ( -70.09,  17.09) 05/28/2025   22:37:11  ( -70.09,  17.03)    2.54                16
 05/28/2025   23:27:40   (  70.02,-175.48) 05/28/2025   23:26:37  (  70.03,-175.41)    2.94                63