Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 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)
 05/10/2025   06:19:44   ( -70.19, -98.75) 05/10/2025   06:20:41  ( -70.19, -98.73)    0.47                57
 05/10/2025   07:10:28   (  70.08,  68.74) 05/10/2025   07:10:08  (  70.09,  68.77)    2.05                20
 05/10/2025   08:00:58   ( -69.35,-122.87) 05/10/2025   07:59:49  ( -69.38,-124.59)   67.39                69
 05/12/2025   22:36:41   ( -70.13,  17.11) 05/12/2025   22:37:12  ( -70.14,  17.08)    2.13                31
 05/12/2025   23:27:25   (  70.01,-175.40) 05/12/2025   23:26:39  (  70.04,-175.43)    3.22                46
 05/15/2025   14:02:59   (  70.37, -34.83) 05/15/2025   14:04:10  (  70.29, -34.47)   16.78                71
 05/15/2025   14:53:38   ( -70.12, 132.88) 05/15/2025   14:53:41  ( -70.12, 132.93)    2.06                 3
 05/15/2025   15:44:21   (  69.95, -59.56) 05/15/2025   15:43:09  (  69.96, -59.66)    3.86                72
 05/18/2025   06:19:53   (  70.16,  81.25) 05/18/2025   06:20:41  (  70.18,  81.26)    1.80                48
 05/18/2025   07:10:35   ( -70.07,-111.29) 05/18/2025   07:10:11  ( -70.08,-111.25)    1.41                24
 05/20/2025   21:46:23   ( -71.13,  28.14) 05/20/2025   21:47:29  ( -71.03,  30.79)   96.11                66
 05/20/2025   22:36:50   (  70.12,-162.92) 05/20/2025   22:37:11  (  70.10,-162.96)    2.31                21
 05/20/2025   23:27:32   ( -70.03,   4.53) 05/20/2025   23:26:41  ( -70.00,   4.53)    3.10                51