Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 2 18.  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)
 02/18/2024   16:08:02   ( -69.98, 114.08) 02/18/2024   16:08:40  ( -69.99, 114.13)    2.40                38
 02/18/2024   16:58:46   (  69.85, -78.42) 02/18/2024   16:58:08  (  69.84, -78.43)    1.27                38
 02/21/2024   07:34:23   (  70.21,  62.15) 02/21/2024   07:35:35  (  70.12,  62.58)   19.14                72
 02/21/2024   08:25:01   ( -69.92,-130.07) 02/21/2024   08:25:06  ( -69.94,-130.04)    2.97                 5
 02/21/2024   09:15:45   (  69.79,  37.42) 02/21/2024   09:14:34  (  69.79,  37.39)    1.42                71
 02/23/2024   23:51:17   (  69.96, 178.30) 02/23/2024   23:52:01  (  69.97, 178.27)    2.05                44
 02/24/2024   00:41:59   ( -69.87, -14.25) 02/24/2024   00:41:31  ( -69.85, -14.26)    1.92                28
 02/26/2024   15:17:41   ( -70.52, 125.88) 02/26/2024   15:18:51  ( -70.44, 127.20)   49.83                70
 02/26/2024   16:08:16   (  69.93, -65.90) 02/26/2024   16:08:25  (  69.95, -65.86)    2.87                 9
 02/26/2024   16:58:58   ( -69.84, 101.56) 02/26/2024   16:57:55  ( -69.84, 101.61)    1.90                63
 02/29/2024   07:34:30   ( -69.97,-117.52) 02/29/2024   07:35:22  ( -70.00,-117.54)    3.14                52
 02/29/2024   08:25:15   (  69.91,  49.89) 02/29/2024   08:24:49  (  69.89,  49.95)    3.50                26
 02/29/2024   09:15:40   ( -68.91,-141.37) 02/29/2024   09:14:33  ( -69.01,-143.59)   89.55                67
 03/02/2024   23:00:58   (  70.65,-170.13) 03/02/2024   23:02:06  (  70.56,-168.45)   62.75                68
 03/02/2024   23:51:29   ( -69.97,  -1.75) 03/02/2024   23:51:45  ( -69.96,  -1.69)    2.31                16
 03/03/2024   00:42:13   (  69.86, 165.73) 03/03/2024   00:41:12  (  69.84, 165.79)    2.84                61