Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 7 8.  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)
 07/10/2025   14:03:32   ( -70.17, 145.33) 07/10/2025   14:04:36  ( -70.14, 145.33)    3.40                64
 07/10/2025   14:54:16   (  70.04, -47.17) 07/10/2025   14:54:03  (  70.03, -47.18)    0.94                13
 07/10/2025   15:44:50   ( -69.54, 120.89) 07/10/2025   15:43:39  ( -69.59, 119.85)   41.12                71
 07/13/2025   06:20:26   ( -70.10, -98.81) 07/13/2025   06:21:04  ( -70.11, -98.82)    1.27                38
 07/13/2025   07:11:10   (  69.98,  68.68) 07/13/2025   07:10:31  (  70.01,  68.67)    2.45                39
 07/15/2025   21:46:48   (  70.61,-151.16) 07/15/2025   21:47:58  (  70.46,-150.07)   43.91                70
 07/15/2025   22:37:22   ( -70.09,  16.97) 07/15/2025   22:37:33  ( -70.08,  17.02)    2.52                11
 07/15/2025   23:28:06   (  69.98,-175.55) 07/15/2025   23:27:00  (  69.96,-175.50)    2.75                66
 07/18/2025   14:03:35   (  70.14, -34.64) 07/18/2025   14:04:32  (  70.13, -34.66)    1.24                57
 07/18/2025   14:54:17   ( -70.04, 132.83) 07/18/2025   14:54:02  ( -70.03, 132.83)    1.12                15
 07/18/2025   15:44:48   (  69.24, -58.70) 07/18/2025   15:43:40  (  69.30, -60.51)   71.70                68
 07/21/2025   06:20:30   (  70.09,  81.20) 07/21/2025   06:21:00  (  70.12,  81.22)    2.98                30
 07/21/2025   07:11:12   ( -69.98,-111.32) 07/21/2025   07:10:31  ( -69.96,-111.37)    2.81                41