Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 23.  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)
 04/25/2024   06:44:28   ( -70.06,-105.06) 04/25/2024   06:45:36  ( -70.08,-105.12)    3.24                68
 04/25/2024   07:35:12   (  69.95,  62.42) 04/25/2024   07:35:03  (  69.97,  62.37)    2.77                 9
 04/25/2024   08:25:49   ( -69.60,-129.73) 04/25/2024   08:24:37  ( -69.64,-130.46)   28.53                72
 04/27/2024   23:01:22   ( -70.06,  10.73) 04/27/2024   23:01:57  ( -70.05,  10.73)    1.63                35
 04/27/2024   23:52:06   (  69.95, 178.20) 04/27/2024   23:51:24  (  69.93, 178.22)    2.62                42
 04/30/2024   14:27:35   (  70.23, -41.07) 04/30/2024   14:28:45  (  70.21, -40.75)   12.04                70
 04/30/2024   15:18:14   ( -69.97, 126.64) 04/30/2024   15:18:17  ( -69.99, 126.56)    3.33                 3
 04/30/2024   16:08:57   (  69.81, -65.81) 04/30/2024   16:07:44  (  69.87, -65.96)    8.08                73
 05/03/2024   06:44:25   (  70.06,  74.98) 05/03/2024   06:45:05  (  70.07,  74.97)    1.20                40
 05/03/2024   07:35:07   ( -69.96,-117.55) 05/03/2024   07:34:35  ( -69.96,-117.55)    0.19                32
 05/05/2024   22:10:39   ( -70.48,  22.80) 05/05/2024   22:11:50  ( -70.36,  23.67)   35.30                71
 05/05/2024   23:01:16   (  70.01,-169.16) 05/05/2024   23:01:21  (  70.02,-169.18)    0.57                 5
 05/05/2024   23:51:58   ( -69.91,  -1.69) 05/05/2024   23:50:51  ( -69.91,  -1.70)    0.66                67