Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 7 5.  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)
 07/06/2025   14:28:53   (  70.08, -40.88) 07/06/2025   14:29:17  (  70.08, -40.93)    1.66                24
 07/06/2025   15:19:34   ( -69.95, 126.63) 07/06/2025   15:18:47  ( -69.97, 126.55)    3.41                47
 07/09/2025   05:55:06   ( -70.30, -92.76) 07/09/2025   05:56:17  ( -70.24, -92.46)   13.48                71
 07/09/2025   06:45:48   (  70.07,  74.90) 07/09/2025   06:45:45  (  70.07,  74.95)    1.98                 3
 07/09/2025   07:36:29   ( -69.94,-117.58) 07/09/2025   07:35:15  ( -69.97,-117.57)    3.25                74
 07/11/2025   22:11:59   ( -70.13,  23.27) 07/11/2025   22:12:48  ( -70.11,  23.24)    2.60                49
 07/11/2025   23:02:43   (  70.01,-169.24) 07/11/2025   23:02:15  (  70.00,-169.27)    1.99                28
 07/14/2025   13:38:28   (  71.00, -29.69) 07/14/2025   13:39:34  (  70.89, -27.35)   86.02                66
 07/14/2025   14:28:54   ( -70.06, 139.13) 07/14/2025   14:29:17  ( -70.07, 139.08)    2.22                23
 07/14/2025   15:19:38   (  69.95, -53.39) 07/14/2025   15:18:44  (  69.96, -53.44)    1.86                54
 07/17/2025   05:55:08   (  70.16,  87.44) 07/17/2025   05:56:15  (  70.17,  87.48)    2.26                67
 07/17/2025   06:45:50   ( -70.06,-105.09) 07/17/2025   06:45:45  ( -70.08,-105.03)    3.09                 5
 07/17/2025   07:36:28   (  69.64,  62.85) 07/17/2025   07:35:17  (  69.68,  62.07)   30.68                71