Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 6 30.  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)
 07/01/2025   05:55:05   (  70.29,  87.26) 07/01/2025   05:56:16  (  70.24,  87.53)   12.24                71
 07/01/2025   06:45:43   ( -70.07,-105.08) 07/01/2025   06:45:46  ( -70.07,-105.08)    0.10                 3
 07/01/2025   07:36:27   (  69.93,  62.44) 07/01/2025   07:35:14  (  69.91,  62.35)    4.08                73
 07/03/2025   22:11:57   (  70.12,-156.70) 07/03/2025   22:12:47  (  70.10,-156.78)    3.11                50
 07/03/2025   23:02:39   ( -70.04,  10.73) 07/03/2025   23:02:16  ( -70.05,  10.78)    2.13                23
 07/06/2025   14:28:53   (  70.10, -40.91) 07/06/2025   14:29:16  (  70.12, -40.86)    3.03                23
 07/06/2025   15:19:34   ( -69.97, 126.61) 07/06/2025   15:18:47  ( -69.96, 126.54)    2.57                47
 07/09/2025   05:55:07   ( -70.31, -92.78) 07/09/2025   05:56:18  ( -70.24, -92.45)   14.60                71
 07/09/2025   06:45:49   (  70.09,  74.87) 07/09/2025   06:45:46  (  70.07,  74.95)    3.37                 3
 07/09/2025   07:36:30   ( -69.95,-117.60) 07/09/2025   07:35:16  ( -69.97,-117.56)    3.04                74
 07/11/2025   22:12:00   ( -70.14,  23.25) 07/11/2025   22:12:49  ( -70.13,  23.27)    1.17                49
 07/11/2025   23:02:43   (  70.03,-169.27) 07/11/2025   23:02:15  (  70.01,-169.25)    1.67                28