Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 9 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)
 09/05/2024   14:28:22   (  70.14, -40.81) 09/05/2024   14:29:12  (  70.15, -40.81)    1.67                50
 09/05/2024   15:19:04   ( -70.05, 126.65) 09/05/2024   15:18:42  ( -70.03, 126.65)    1.57                22
 09/05/2024   16:09:31   (  69.03, -64.56) 09/05/2024   16:08:25  (  69.04, -67.04)   98.46                66
 09/08/2024   06:45:13   (  70.10,  75.04) 09/08/2024   06:45:37  (  70.09,  75.01)    1.87                24
 09/08/2024   07:35:55   ( -70.01,-117.50) 09/08/2024   07:35:06  ( -70.03,-117.45)    2.76                49
 09/10/2024   22:11:21   ( -70.26,  23.29) 09/10/2024   22:12:32  ( -70.22,  23.46)    7.71                71
 09/10/2024   23:02:03   (  70.04,-169.08) 09/10/2024   23:02:00  (  70.05,-169.13)    2.41                 3
 09/10/2024   23:52:44   ( -69.90,  -1.54) 09/10/2024   23:51:30  ( -69.94,  -1.66)    6.33                74
 09/13/2024   14:28:10   ( -70.17, 139.22) 09/13/2024   14:28:54  ( -70.15, 139.28)    3.39                44
 09/13/2024   15:18:53   (  70.01, -53.23) 09/13/2024   15:18:21  (  70.04, -53.24)    2.66                32
 09/16/2024   05:54:26   (  70.74,  86.80) 09/16/2024   05:55:35  (  70.66,  88.32)   56.60                69
 09/16/2024   06:44:58   ( -70.12,-104.90) 09/16/2024   06:45:13  ( -70.11,-104.85)    1.84                15
 09/16/2024   07:35:42   (  70.01,  62.57) 09/16/2024   07:34:40  (  69.99,  62.62)    3.03                62
 09/18/2024   22:11:04   (  70.13,-156.43) 09/18/2024   22:12:02  (  70.15,-156.50)    3.22                58
 09/18/2024   23:01:46   ( -70.04,  11.03) 09/18/2024   23:01:32  ( -70.03,  10.97)    2.21                14
 09/18/2024   23:52:18   (  69.29, 179.43) 09/18/2024   23:51:09  (  69.36, 177.69)   68.52                69