Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 31.  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)
 07/31/2025   21:46:55   (  70.81,-151.50) 07/31/2025   21:48:03  (  70.73,-149.67)   67.62                68
 07/31/2025   22:37:25   ( -70.07,  17.00) 07/31/2025   22:37:43  ( -70.07,  16.99)    0.29                18
 07/31/2025   23:28:09   (  69.98,-175.55) 07/31/2025   23:27:10  (  69.97,-175.51)    1.76                59
 08/03/2025   14:03:38   (  70.16, -34.69) 08/03/2025   14:04:45  (  70.15, -34.66)    1.67                67
 08/03/2025   14:54:20   ( -70.04, 132.81) 08/03/2025   14:54:15  ( -70.04, 132.83)    0.76                 5
 08/03/2025   15:44:58   (  69.64, -59.28) 08/03/2025   15:43:46  (  69.72, -59.98)   28.86                72
 08/06/2025   06:20:32   (  70.09,  81.19) 08/06/2025   06:21:17  (  70.10,  81.15)    1.82                45
 08/06/2025   07:11:15   ( -70.02,-111.39) 08/06/2025   07:10:47  ( -70.00,-111.37)    3.06                28
 08/08/2025   21:47:00   ( -71.10,  28.02) 08/08/2025   21:48:06  ( -70.96,  30.66)   96.70                66
 08/08/2025   22:37:26   (  70.08,-163.02) 08/08/2025   22:37:47  (  70.08,-163.00)    1.06                21
 08/08/2025   23:28:08   ( -69.95,   4.48) 08/08/2025   23:27:17  ( -69.98,   4.49)    3.40                51
 08/11/2025   14:03:39   ( -70.25, 145.17) 08/11/2025   14:04:50  ( -70.22, 145.43)   10.27                71
 08/11/2025   14:54:20   (  70.02, -47.16) 08/11/2025   14:54:18  (  70.05, -47.17)    3.48                 2
 08/11/2025   15:45:02   ( -69.89, 120.35) 08/11/2025   15:43:49  ( -69.90, 120.25)    4.10                73