Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 3.  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)
 06/04/2025   14:28:36   (  70.12, -40.87) 06/04/2025   14:28:58  (  70.10, -40.89)    2.53                22
 06/04/2025   15:19:17   ( -70.01, 126.62) 06/04/2025   15:18:27  ( -70.04, 126.66)    3.10                50
 06/07/2025   05:54:47   ( -70.21, -92.54) 06/07/2025   05:55:57  ( -70.22, -92.47)    3.24                70
 06/07/2025   06:45:31   (  70.06,  74.99) 06/07/2025   06:45:25  (  70.06,  74.95)    1.31                 6
 06/07/2025   07:36:09   ( -69.79,-117.28) 06/07/2025   07:34:57  ( -69.84,-117.73)   17.93                72
 06/09/2025   22:11:43   ( -70.15,  23.30) 06/09/2025   22:12:25  ( -70.16,  23.34)    1.67                42
 06/09/2025   23:02:27   (  70.01,-169.17) 06/09/2025   23:01:53  (  70.00,-169.24)    2.94                34
 06/12/2025   13:38:06   (  70.64, -29.03) 06/12/2025   13:39:16  (  70.57, -27.80)   46.12                70
 06/12/2025   14:28:39   ( -70.10, 139.14) 06/12/2025   14:28:52  ( -70.13, 139.19)    3.08                13
 06/12/2025   15:19:23   (  69.96, -53.33) 06/12/2025   15:18:20  (  69.96, -53.40)    2.45                63
 06/15/2025   05:54:54   (  70.18,  87.46) 06/15/2025   05:55:49  (  70.17,  87.52)    2.44                55
 06/15/2025   06:45:35   ( -70.06,-105.03) 06/15/2025   06:45:19  ( -70.06,-105.00)    1.13                16
 06/15/2025   07:36:06   (  69.23,  63.49) 06/15/2025   07:34:58  (  69.29,  61.58)   75.54                68