Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 3 11.  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)
 03/13/2024   15:17:59   ( -70.20, 126.30) 03/13/2024   15:19:10  ( -70.16, 126.69)   15.39                71
 03/13/2024   16:08:39   (  69.92, -65.97) 03/13/2024   16:08:38  (  69.94, -65.97)    2.07                 1
 03/13/2024   16:59:21   ( -69.83, 101.49) 03/13/2024   16:58:08  ( -69.83, 101.51)    0.87                73
 03/16/2024   07:34:53   ( -70.01,-117.65) 03/16/2024   07:35:39  ( -70.03,-117.61)    2.06                46
 03/16/2024   08:25:37   (  69.90,  49.83) 03/16/2024   08:25:06  (  69.92,  49.88)    2.74                31
 03/18/2024   23:01:20   (  70.67,-170.24) 03/18/2024   23:02:28  (  70.58,-168.57)   62.87                68
 03/18/2024   23:51:51   ( -69.99,  -1.86) 03/18/2024   23:52:07  ( -69.98,  -1.80)    2.61                16
 03/19/2024   00:42:35   (  69.88, 165.62) 03/19/2024   00:41:34  (  69.86, 165.69)    3.46                61
 03/21/2024   15:18:06   (  70.03, -53.47) 03/21/2024   15:19:04  (  70.05, -53.44)    2.97                58
 03/21/2024   16:08:48   ( -69.92, 114.01) 03/21/2024   16:08:35  ( -69.90, 113.97)    3.31                13
 03/21/2024   16:59:20   (  69.18, -77.61) 03/21/2024   16:58:11  (  69.28, -79.21)   64.27                69
 03/24/2024   07:35:03   (  69.98,  62.37) 03/24/2024   07:35:31  (  70.00,  62.37)    2.48                28
 03/24/2024   08:25:44   ( -69.87,-130.14) 03/24/2024   08:25:00  ( -69.90,-130.13)    3.57                44