Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 13.  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)
 05/15/2025   14:03:00   (  70.38, -34.85) 05/15/2025   14:04:11  (  70.29, -34.46)   17.73                71
 05/15/2025   14:53:39   ( -70.14, 132.85) 05/15/2025   14:53:42  ( -70.12, 132.93)    3.33                 3
 05/15/2025   15:44:22   (  69.96, -59.57) 05/15/2025   15:43:10  (  69.97, -59.65)    3.01                72
 05/18/2025   06:19:53   (  70.17,  81.24) 05/18/2025   06:20:42  (  70.15,  81.21)    3.01                49
 05/18/2025   07:10:35   ( -70.08,-111.31) 05/18/2025   07:10:11  ( -70.09,-111.23)    2.81                24
 05/20/2025   22:36:50   (  70.12,-162.92) 05/20/2025   22:37:11  (  70.14,-162.91)    2.75                21
 05/20/2025   23:27:32   ( -70.03,   4.53) 05/20/2025   23:26:41  ( -70.04,   4.57)    1.80                51
 05/23/2025   14:03:03   ( -70.20, 145.41) 05/23/2025   14:04:14  ( -70.18, 145.38)    2.65                71
 05/23/2025   14:53:47   (  70.07, -47.09) 05/23/2025   14:53:41  (  70.06, -47.13)    1.85                 6
 05/23/2025   15:44:26   ( -69.83, 120.59) 05/23/2025   15:43:13  ( -69.85, 120.20)   15.13                73
 05/26/2025   06:20:00   ( -70.16, -98.77) 05/26/2025   06:20:43  ( -70.13, -98.79)    2.97                43
 05/26/2025   07:10:44   (  70.04,  68.73) 05/26/2025   07:10:10  (  70.02,  68.69)    2.16                34