Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 9.  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)
 06/11/2025   06:20:11   ( -70.15, -98.80) 06/11/2025   06:20:53  ( -70.15, -98.78)    0.80                42
 06/11/2025   07:10:56   (  70.05,  68.65) 06/11/2025   07:10:20  (  70.05,  68.72)    2.43                36
 06/13/2025   21:46:38   (  70.84,-151.46) 06/13/2025   21:47:46  (  70.73,-149.68)   66.13                68
 06/13/2025   22:37:07   ( -70.09,  17.04) 06/13/2025   22:37:26  ( -70.08,  16.99)    2.83                19
 06/13/2025   23:27:52   (  70.00,-175.51) 06/13/2025   23:26:53  (  69.97,-175.52)    2.88                59
 06/16/2025   14:03:22   (  70.16, -34.62) 06/16/2025   14:04:28  (  70.14, -34.67)    2.65                66
 06/16/2025   14:54:03   ( -70.04, 132.88) 06/16/2025   14:53:58  ( -70.04, 132.81)    2.61                 5
 06/16/2025   15:44:41   (  69.58, -59.12) 06/16/2025   15:43:30  (  69.66, -60.08)   38.09                71
 06/19/2025   06:20:18   (  70.11,  81.21) 06/19/2025   06:20:59  (  70.15,  81.20)    3.44                41
 06/19/2025   07:11:00   ( -70.05,-111.37) 06/19/2025   07:10:29  ( -70.05,-111.31)    2.29                31
 06/21/2025   21:46:43   ( -70.95,  28.34) 06/21/2025   21:47:51  ( -70.84,  30.48)   78.59                68
 06/21/2025   22:37:13   (  70.08,-162.96) 06/21/2025   22:37:30  (  70.08,-163.02)    2.11                17
 06/21/2025   23:27:55   ( -70.01,   4.46) 06/21/2025   23:27:00  ( -69.98,   4.48)    3.10                55