Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 3 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)
 03/21/2024   15:18:06   (  70.03, -53.47) 03/21/2024   15:19:10  (  70.00, -53.53)    3.55                64
 03/21/2024   16:08:48   ( -69.93, 114.00) 03/21/2024   16:08:39  ( -69.95, 114.02)    2.18                 9
 03/21/2024   16:59:24   (  69.39, -77.90) 03/21/2024   16:58:13  (  69.46, -79.01)   43.68                71
 03/24/2024   07:35:02   (  69.98,  62.37) 03/24/2024   07:35:37  (  69.98,  62.32)    2.10                35
 03/24/2024   08:25:44   ( -69.88,-130.16) 03/24/2024   08:25:07  ( -69.88,-130.20)    1.54                37
 03/26/2024   23:01:22   ( -70.41,  10.16) 03/26/2024   23:02:33  ( -70.32,  11.04)   34.29                71
 03/26/2024   23:51:59   (  69.94, 178.20) 03/26/2024   23:52:05  (  69.93, 178.13)    2.60                 6
 03/27/2024   00:42:41   ( -69.83, -14.33) 03/27/2024   00:41:35  ( -69.83, -14.38)    2.13                66
 03/29/2024   15:18:12   ( -70.01, 126.55) 03/29/2024   15:19:05  ( -70.02, 126.50)    2.76                53
 03/29/2024   16:08:56   (  69.91, -65.99) 03/29/2024   16:08:32  (  69.91, -66.02)    1.17                24
 03/29/2024   16:59:23   ( -69.00, 102.63) 03/29/2024   16:58:16  ( -69.03, 100.44)   87.03                67
 04/01/2024   06:44:42   (  70.88,  73.61) 04/01/2024   06:45:49  (  70.78,  75.87)   83.31                67
 04/01/2024   07:35:09   ( -69.98,-117.64) 04/01/2024   07:35:32  ( -69.97,-117.69)    2.00                23
 04/01/2024   08:25:53   (  69.88,  49.81) 04/01/2024   08:24:58  (  69.91,  49.87)    3.21                55