Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 5 27.  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)
 05/27/2024   06:44:13   ( -70.17,-105.09) 05/27/2024   06:45:25  ( -70.17,-105.04)    1.83                72
 05/27/2024   07:34:57   (  70.04,  62.43) 05/27/2024   07:34:52  (  70.07,  62.46)    3.29                 5
 05/27/2024   08:25:36   ( -69.80,-129.90) 05/27/2024   08:24:24  ( -69.84,-130.23)   13.13                72
 05/29/2024   23:01:12   ( -70.11,  10.76) 05/29/2024   23:01:52  ( -70.11,  10.76)    0.17                40
 05/29/2024   23:51:56   (  69.98, 178.27) 05/29/2024   23:51:19  (  70.01, 178.26)    2.97                37
 06/01/2024   14:27:33   (  70.41, -41.26) 06/01/2024   14:28:45  (  70.30, -40.72)   23.83                72
 06/01/2024   15:18:10   ( -70.06, 126.60) 06/01/2024   15:18:17  ( -70.08, 126.60)    1.24                 7
 06/01/2024   16:08:55   (  69.99, -65.98) 06/01/2024   16:07:44  (  69.97, -65.91)    3.42                71
 06/04/2024   06:44:27   (  70.11,  74.97) 06/04/2024   06:45:13  (  70.12,  74.91)    2.12                46
 06/04/2024   07:35:09   ( -70.03,-117.59) 06/04/2024   07:34:43  ( -70.00,-117.61)    2.69                26
 06/06/2024   22:10:53   ( -70.79,  22.34) 06/06/2024   22:12:02  ( -70.67,  23.97)   61.20                69
 06/06/2024   23:01:26   (  70.09,-169.24) 06/06/2024   23:01:38  (  70.06,-169.27)    3.03                12
 06/06/2024   23:52:08   ( -70.00,  -1.79) 06/06/2024   23:51:07  ( -70.01,  -1.71)    2.88                61
 06/09/2024   14:27:40   ( -70.14, 139.13) 06/09/2024   14:28:35  ( -70.14, 139.09)    1.28                55
 06/09/2024   15:18:24   (  70.02, -53.38) 06/09/2024   15:18:02  (  70.03, -53.42)    1.99                22