Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 12 19.  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)
 12/21/2024   05:55:59   (  70.18,  87.42) 12/21/2024   05:56:43  (  70.21,  87.46)    3.31                44
 12/21/2024   06:46:41   ( -70.07,-105.10) 12/21/2024   06:46:13  ( -70.10,-105.07)    2.77                28
 12/23/2024   22:12:49   (  70.17,-156.77) 12/23/2024   22:13:11  (  70.16,-156.73)    1.85                22
 12/23/2024   23:03:31   ( -70.06,  10.71) 12/23/2024   23:02:41  ( -70.05,  10.75)    1.48                50
 12/26/2024   13:38:59   ( -70.41, 151.32) 12/26/2024   13:40:10  ( -70.35, 151.78)   18.47                71
 12/26/2024   14:29:39   (  70.11, -40.91) 12/26/2024   14:29:39  (  70.13, -40.89)    1.80                 0
 12/26/2024   15:20:21   ( -70.00, 126.58) 12/26/2024   15:19:09  ( -70.02, 126.59)    2.16                72
 12/29/2024   05:55:46   ( -70.21, -92.58) 12/29/2024   05:56:39  ( -70.21, -92.52)    2.29                53
 12/29/2024   06:46:29   (  70.07,  74.95) 12/29/2024   06:46:07  (  70.05,  74.88)    3.34                22
 12/29/2024   07:36:57   ( -69.21,-116.49) 12/29/2024   07:35:49  ( -69.28,-118.53)   80.58                68
 12/31/2024   22:12:36   ( -70.18,  23.25) 12/31/2024   22:13:06  ( -70.15,  23.28)    3.35                30
 12/31/2024   23:03:19   (  70.04,-169.22) 12/31/2024   23:02:33  (  70.03,-169.24)    0.98                46