Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 5 13.  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)
 05/14/2025   05:54:45   (  71.15,  86.01) 05/14/2025   05:55:51  (  71.05,  88.64)   95.47                66
 05/14/2025   06:45:10   ( -70.17,-105.08) 05/14/2025   06:45:35  ( -70.16,-105.05)    1.35                25
 05/14/2025   07:35:54   (  70.05,  62.42) 05/14/2025   07:35:02  (  70.06,  62.45)    2.10                52
 05/16/2025   22:11:25   (  70.20,-156.68) 05/16/2025   22:12:32  (  70.21,-156.73)    2.05                67
 05/16/2025   23:02:07   ( -70.11,  10.77) 05/16/2025   23:02:02  ( -70.09,  10.74)    2.67                 5
 05/16/2025   23:52:45   (  69.67, 178.74) 05/16/2025   23:51:34  (  69.71, 177.85)   34.48                71
 05/19/2025   14:28:22   (  70.15, -40.84) 05/19/2025   14:28:58  (  70.17, -40.90)    3.12                36
 05/19/2025   15:19:04   ( -70.06, 126.61) 05/19/2025   15:18:28  ( -70.05, 126.57)    1.74                36
 05/22/2025   05:54:41   ( -70.54, -93.01) 05/22/2025   05:55:53  ( -70.43, -92.28)   29.78                72
 05/22/2025   06:45:20   (  70.15,  74.91) 05/22/2025   06:45:23  (  70.16,  74.97)    2.48                 3
 05/22/2025   07:36:01   ( -70.02,-117.56) 05/22/2025   07:34:53  ( -70.04,-117.55)    3.25                68
 05/24/2025   22:11:31   ( -70.18,  23.31) 05/24/2025   22:12:21  ( -70.18,  23.25)    2.23                50
 05/24/2025   23:02:15   (  70.06,-169.19) 05/24/2025   23:01:48  (  70.07,-169.26)    2.94                27