Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 14.  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)
 06/15/2025   05:54:56   (  70.26,  87.35) 06/15/2025   05:56:08  (  70.22,  87.50)    7.44                72
 06/15/2025   06:45:36   ( -70.10,-105.08) 06/15/2025   06:45:38  ( -70.10,-105.02)    2.34                 2
 06/15/2025   07:36:18   (  69.89,  62.53) 06/15/2025   07:35:06  (  69.90,  62.33)    7.99                72
 06/17/2025   22:11:50   (  70.16,-156.74) 06/17/2025   22:12:39  (  70.17,-156.69)    2.15                49
 06/17/2025   23:02:31   ( -70.05,  10.75) 06/17/2025   23:02:09  ( -70.06,  10.79)    1.69                22
 06/17/2025   23:52:58   (  69.00, 179.58) 06/17/2025   23:51:52  (  69.07, 177.09)   99.17                66
 06/20/2025   14:28:45   (  70.08, -40.85) 06/20/2025   14:29:11  (  70.10, -40.91)    3.45                26
 06/20/2025   15:19:27   ( -70.01, 126.57) 06/20/2025   15:18:41  ( -69.99, 126.57)    2.29                46
 06/23/2025   05:55:01   ( -70.40, -92.88) 06/23/2025   05:56:12  ( -70.34, -92.33)   21.72                71
 06/23/2025   06:45:41   (  70.05,  74.96) 06/23/2025   06:45:42  (  70.06,  74.92)    2.37                 1
 06/23/2025   07:36:23   ( -69.98,-117.61) 06/23/2025   07:35:12  ( -69.96,-117.59)    2.30                71
 06/25/2025   22:11:53   ( -70.16,  23.25) 06/25/2025   22:12:45  ( -70.18,  23.31)    2.98                52
 06/25/2025   23:02:37   (  70.03,-169.24) 06/25/2025   23:02:13  (  70.01,-169.28)    2.71                24