Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 6 23.  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)
 06/24/2025   14:03:25   ( -70.19, 145.32) 06/24/2025   14:04:33  ( -70.17, 145.36)    2.48                68
 06/24/2025   14:54:09   (  70.04, -47.15) 06/24/2025   14:54:00  (  70.07, -47.14)    2.92                 9
 06/24/2025   15:44:46   ( -69.72, 120.66) 06/24/2025   15:43:33  ( -69.80, 120.11)   22.85                73
 06/27/2025   06:20:20   ( -70.11, -98.78) 06/27/2025   06:21:04  ( -70.13, -98.83)    2.93                44
 06/27/2025   07:11:05   (  70.02,  68.66) 06/27/2025   07:10:31  (  70.02,  68.67)    0.52                34
 06/29/2025   21:46:47   (  70.83,-151.49) 06/29/2025   21:47:55  (  70.72,-149.70)   66.73                68
 06/29/2025   22:37:16   ( -70.08,  17.03) 06/29/2025   22:37:35  ( -70.07,  16.97)    2.27                19
 06/29/2025   23:28:00   (  69.94,-175.46) 06/29/2025   23:27:02  (  69.96,-175.54)    3.69                58
 07/02/2025   14:03:30   (  70.18, -34.69) 07/02/2025   14:04:34  (  70.15, -34.66)    3.19                64
 07/02/2025   14:54:11   ( -70.05, 132.83) 07/02/2025   14:54:04  ( -70.05, 132.83)    0.41                 7
 07/02/2025   15:44:48   (  69.55, -59.11) 07/02/2025   15:43:37  (  69.61, -60.14)   40.48                71
 07/05/2025   06:20:25   (  70.11,  81.19) 07/05/2025   06:21:04  (  70.12,  81.18)    1.20                39
 07/05/2025   07:11:07   ( -70.03,-111.37) 07/05/2025   07:10:34  ( -70.02,-111.33)    1.37                33