Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 11.  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)
 05/12/2025   22:36:41   ( -70.14,  17.09) 05/12/2025   22:37:12  ( -70.14,  17.07)    1.12                31
 05/12/2025   23:27:25   (  70.02,-175.42) 05/12/2025   23:26:39  (  70.04,-175.43)    1.37                46
 05/15/2025   14:03:00   (  70.38, -34.85) 05/15/2025   14:04:11  (  70.29, -34.46)   17.55                71
 05/15/2025   14:53:39   ( -70.13, 132.86) 05/15/2025   14:53:42  ( -70.13, 132.93)    2.97                 3
 05/15/2025   15:44:22   (  69.96, -59.57) 05/15/2025   15:43:10  (  69.97, -59.65)    3.09                72
 05/18/2025   06:19:53   (  70.17,  81.25) 05/18/2025   06:20:42  (  70.14,  81.21)    3.02                49
 05/18/2025   07:10:35   ( -70.08,-111.30) 05/18/2025   07:10:11  ( -70.09,-111.23)    2.93                24
 05/20/2025   22:36:50   (  70.12,-162.92) 05/20/2025   22:37:11  (  70.14,-162.91)    2.52                21
 05/20/2025   23:27:32   ( -70.03,   4.54) 05/20/2025   23:26:41  ( -70.04,   4.57)    1.57                51
 05/23/2025   14:03:03   ( -70.19, 145.42) 05/23/2025   14:04:14  ( -70.17, 145.37)    3.02                71
 05/23/2025   14:53:47   (  70.07, -47.09) 05/23/2025   14:53:41  (  70.06, -47.14)    2.68                 6
 05/23/2025   15:44:26   ( -69.83, 120.60) 05/23/2025   15:43:13  ( -69.85, 120.19)   15.69                73