Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2025 7 24.  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)
 07/25/2025   05:55:13   ( -70.40, -92.94) 07/25/2025   05:56:25  ( -70.30, -92.37)   24.11                72
 07/25/2025   06:45:52   (  70.04,  74.93) 07/25/2025   06:45:55  (  70.03,  74.88)    2.02                 3
 07/25/2025   07:36:34   ( -69.93,-117.59) 07/25/2025   07:35:25  ( -69.92,-117.63)    2.03                69
 07/27/2025   22:12:03   ( -70.10,  23.30) 07/27/2025   22:12:58  ( -70.12,  23.25)    3.12                55
 07/27/2025   23:02:47   (  70.00,-169.25) 07/27/2025   23:02:25  (  70.01,-169.26)    1.24                22
 07/27/2025   23:53:15   ( -69.15,  -0.69) 07/27/2025   23:52:07  ( -69.25,  -2.67)   78.80                68
 07/30/2025   14:28:57   ( -70.06, 139.12) 07/30/2025   14:29:27  ( -70.09, 139.09)    3.18                30
 07/30/2025   15:19:41   (  69.97, -53.43) 07/30/2025   15:18:54  (  69.98, -53.43)    0.38                47
 08/02/2025   05:55:13   (  70.31,  87.19) 08/02/2025   05:56:25  (  70.25,  87.56)   15.92                72
 08/02/2025   06:45:52   ( -70.03,-105.06) 08/02/2025   06:45:57  ( -70.04,-105.10)    1.64                 5
 08/02/2025   07:36:36   (  69.95,  62.38) 08/02/2025   07:35:24  (  69.92,  62.38)    3.06                72
 08/04/2025   22:12:05   (  70.13,-156.76) 08/04/2025   22:12:56  (  70.12,-156.73)    2.09                51
 08/04/2025   23:02:47   ( -70.01,  10.75) 08/04/2025   23:02:26  ( -70.02,  10.76)    1.65                21