Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 7 19.  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)
 07/19/2024   14:28:22   (  70.14, -40.93) 07/19/2024   14:29:00  (  70.13, -40.88)    2.05                38
 07/19/2024   15:19:03   ( -69.99, 126.61) 07/19/2024   15:18:30  ( -70.01, 126.59)    2.48                33
 07/22/2024   05:54:43   ( -70.75, -93.45) 07/22/2024   05:55:52  ( -70.68, -91.82)   60.37                69
 07/22/2024   06:45:16   (  70.07,  74.94) 07/22/2024   06:45:28  (  70.09,  74.95)    1.68                12
 07/22/2024   07:35:58   ( -69.97,-117.59) 07/22/2024   07:34:58  ( -69.97,-117.58)    0.40                60
 07/24/2024   22:11:28   ( -70.18,  23.25) 07/24/2024   22:12:29  ( -70.15,  23.29)    3.07                61
 07/24/2024   23:02:11   (  70.02,-169.20) 07/24/2024   23:01:56  (  70.04,-169.22)    2.71                15
 07/24/2024   23:52:44   ( -69.44,  -1.03) 07/24/2024   23:51:34  ( -69.49,  -2.35)   51.70                70
 07/27/2024   14:28:23   ( -70.13, 139.09) 07/27/2024   14:28:56  ( -70.11, 139.13)    3.03                33
 07/27/2024   15:19:06   (  69.98, -53.37) 07/27/2024   15:18:23  (  70.00, -53.39)    1.79                43
 07/30/2024   05:54:39   (  70.38,  87.17) 07/30/2024   05:55:50  (  70.28,  87.65)   20.79                71
 07/30/2024   06:45:17   ( -70.06,-105.01) 07/30/2024   06:45:22  ( -70.07,-105.03)    1.51                 5
 07/30/2024   07:36:01   (  69.96,  62.44) 07/30/2024   07:34:49  (  69.95,  62.45)    1.18                72
 08/01/2024   22:11:28   (  70.11,-156.63) 08/01/2024   22:12:16  (  70.13,-156.67)    2.63                48
 08/01/2024   23:02:11   ( -70.04,  10.78) 08/01/2024   23:01:46  ( -70.02,  10.81)    2.69                25