Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 3 29.  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)
 03/29/2024   15:18:11   ( -70.04, 126.51) 03/29/2024   15:19:01  ( -70.04, 126.53)    1.05                50
 03/29/2024   16:08:55   (  69.92, -66.02) 03/29/2024   16:08:28  (  69.93, -65.97)    1.91                27
 03/29/2024   16:59:20   ( -68.93, 102.73) 03/29/2024   16:58:13  ( -68.99, 100.40)   93.38                67
 04/01/2024   06:44:38   (  70.78,  73.79) 04/01/2024   06:45:46  (  70.66,  75.69)   71.33                68
 04/01/2024   07:35:07   ( -69.99,-117.66) 04/01/2024   07:35:26  ( -70.00,-117.63)    1.10                19
 04/01/2024   08:25:51   (  69.88,  49.82) 04/01/2024   08:24:53  (  69.89,  49.86)    1.59                58
 04/03/2024   23:01:21   (  70.07,-169.32) 04/03/2024   23:02:20  (  70.07,-169.26)    2.05                59
 04/03/2024   23:52:03   ( -69.96,  -1.84) 04/03/2024   23:51:50  ( -69.96,  -1.79)    2.17                13
 04/04/2024   00:42:36   (  69.27, 166.47) 04/04/2024   00:41:27  (  69.29, 164.95)   59.87                69
 04/06/2024   15:18:15   (  70.00, -53.45) 04/06/2024   15:18:43  (  69.99, -53.48)    2.44                28
 04/06/2024   16:08:57   ( -69.90, 114.03) 04/06/2024   16:08:13  ( -69.88, 114.00)    2.26                44
 04/09/2024   06:44:27   ( -70.11,-105.14) 04/09/2024   06:45:38  ( -70.08,-105.09)    3.28                71
 04/09/2024   07:35:10   (  69.96,  62.39) 04/09/2024   07:35:05  (  69.96,  62.39)    0.59                 5
 04/09/2024   08:25:50   ( -69.74,-129.97) 04/09/2024   08:24:36  ( -69.80,-130.20)   11.22                74
 04/11/2024   23:01:21   ( -70.02,  10.76) 04/11/2024   23:02:00  ( -70.02,  10.73)    1.40                39
 04/11/2024   23:52:05   (  69.93, 178.22) 04/11/2024   23:51:26  (  69.95, 178.28)    3.24                39