Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 16.  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)
 06/17/2025   22:11:50   (  70.16,-156.74) 06/17/2025   22:12:39  (  70.17,-156.68)    2.60                49
 06/17/2025   23:02:31   ( -70.05,  10.75) 06/17/2025   23:02:09  ( -70.06,  10.79)    1.97                22
 06/17/2025   23:52:58   (  68.99, 179.58) 06/17/2025   23:51:52  (  69.08, 177.10)   99.22                66
 06/20/2025   14:28:46   (  70.13, -40.92) 06/20/2025   14:29:11  (  70.11, -40.89)    1.90                25
 06/20/2025   15:19:27   ( -70.01, 126.58) 06/20/2025   15:18:41  ( -70.00, 126.58)    1.13                46
 06/23/2025   05:55:01   ( -70.39, -92.88) 06/23/2025   05:56:13  ( -70.30, -92.39)   21.19                72
 06/23/2025   06:45:42   (  70.10,  74.89) 06/23/2025   06:45:42  (  70.08,  74.94)    2.51                 0
 06/23/2025   07:36:23   ( -69.98,-117.61) 06/23/2025   07:35:12  ( -69.98,-117.57)    1.46                71
 06/25/2025   22:11:53   ( -70.16,  23.26) 06/25/2025   22:12:46  ( -70.15,  23.27)    1.02                53
 06/25/2025   23:02:36   (  70.02,-169.23) 06/25/2025   23:02:12  (  70.04,-169.24)    1.89                24
 06/25/2025   23:53:03   ( -69.15,  -0.65) 06/25/2025   23:51:55  ( -69.22,  -2.72)   82.21                68
 06/28/2025   14:28:47   ( -70.08, 139.14) 06/28/2025   14:29:16  ( -70.09, 139.07)    2.86                29
 06/28/2025   15:19:32   (  70.00, -53.43) 06/28/2025   15:18:42  (  70.03, -53.37)    3.51                50