Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 7 27.  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)
 07/27/2024   14:28:26   ( -70.10, 139.12) 07/27/2024   14:29:01  ( -70.09, 139.07)    2.69                35
 07/27/2024   15:19:10   (  69.99, -53.40) 07/27/2024   15:18:28  (  69.98, -53.42)    1.28                42
 07/30/2024   05:54:47   (  70.56,  86.86) 07/30/2024   05:55:57  (  70.44,  87.83)   38.20                70
 07/30/2024   06:45:22   ( -70.08,-105.08) 07/30/2024   06:45:32  ( -70.06,-105.09)    3.13                10
 07/30/2024   07:36:06   (  69.98,  62.39) 07/30/2024   07:34:59  (  69.95,  62.41)    3.10                67
 08/01/2024   22:11:36   (  70.13,-156.70) 08/01/2024   22:12:33  (  70.15,-156.71)    2.50                57
 08/01/2024   23:02:18   ( -70.02,  10.78) 08/01/2024   23:02:03  ( -70.05,  10.78)    2.82                15
 08/01/2024   23:52:50   (  69.28, 179.18) 08/01/2024   23:51:41  (  69.33, 177.44)   68.70                69
 08/04/2024   14:28:32   (  70.08, -40.85) 08/04/2024   14:29:04  (  70.10, -40.89)    3.08                32
 08/04/2024   15:19:15   ( -70.02, 126.55) 08/04/2024   15:18:34  ( -70.00, 126.60)    2.63                41
 08/07/2024   05:54:52   ( -70.56, -93.14) 08/07/2024   05:56:03  ( -70.41, -92.21)   37.91                71
 08/07/2024   06:45:29   (  70.10,  74.90) 08/07/2024   06:45:34  (  70.08,  74.95)    2.80                 5
 08/07/2024   07:36:11   ( -69.98,-117.61) 08/07/2024   07:35:04  ( -69.98,-117.55)    2.25                67
 08/09/2024   22:11:40   ( -70.16,  23.27) 08/09/2024   22:12:36  ( -70.14,  23.28)    1.96                56
 08/09/2024   23:02:23   (  70.01,-169.21) 08/09/2024   23:02:03  (  70.02,-169.24)    1.60                20