Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 15.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 05/16/2025   22:11:25   (  70.20,-156.67) 05/16/2025   22:12:32  (  70.22,-156.72)    3.02                67
 05/16/2025   23:02:07   ( -70.11,  10.77) 05/16/2025   23:02:02  ( -70.10,  10.74)    1.97                 5
 05/16/2025   23:52:45   (  69.67, 178.75) 05/16/2025   23:51:34  (  69.72, 177.86)   34.71                71
 05/19/2025   14:28:23   (  70.19, -40.92) 05/19/2025   14:28:58  (  70.18, -40.89)    2.22                35
 05/19/2025   15:19:04   ( -70.06, 126.61) 05/19/2025   15:18:28  ( -70.06, 126.58)    1.31                36
 05/22/2025   05:54:41   ( -70.59, -93.09) 05/22/2025   05:55:52  ( -70.44, -92.26)   34.73                71
 05/22/2025   06:45:19   (  70.15,  74.92) 05/22/2025   06:45:23  (  70.12,  74.91)    3.62                 4
 05/22/2025   07:36:00   ( -70.01,-117.56) 05/22/2025   07:34:53  ( -70.00,-117.61)    2.43                67
 05/24/2025   22:11:31   ( -70.18,  23.32) 05/24/2025   22:12:21  ( -70.20,  23.28)    2.32                50
 05/24/2025   23:02:16   (  70.11,-169.26) 05/24/2025   23:01:48  (  70.09,-169.23)    2.41                28
 05/24/2025   23:52:40   ( -69.07,  -0.44) 05/24/2025   23:51:34  ( -69.09,  -2.94)   99.52                66
 05/27/2025   13:37:58   (  70.86, -29.33) 05/27/2025   13:39:07  (  70.75, -27.64)   62.77                69
 05/27/2025   14:28:28   ( -70.15, 139.13) 05/27/2025   14:28:46  ( -70.15, 139.11)    1.02                18
 05/27/2025   15:19:12   (  70.02, -53.37) 05/27/2025   15:18:13  (  70.04, -53.41)    2.64                59