Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 8 20.  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)
 08/20/2024   14:28:34   (  70.12, -40.87) 08/20/2024   14:29:15  (  70.10, -40.92)    2.50                41
 08/20/2024   15:19:16   ( -70.02, 126.60) 08/20/2024   15:18:45  ( -69.99, 126.56)    3.35                31
 08/23/2024   05:55:00   ( -71.05, -93.91) 08/23/2024   05:56:06  ( -70.94, -91.44)   90.49                66
 08/23/2024   06:45:27   (  70.06,  74.99) 08/23/2024   06:45:47  (  70.07,  74.92)    3.11                20
 08/23/2024   07:36:09   ( -69.96,-117.53) 08/23/2024   07:35:17  ( -69.96,-117.60)    2.74                52
 08/25/2024   22:11:38   ( -70.23,  23.21) 08/25/2024   22:12:50  ( -70.19,  23.32)    5.96                72
 08/25/2024   23:02:21   (  70.08,-169.25) 08/25/2024   23:02:17  (  70.08,-169.19)    2.28                 4
 08/25/2024   23:53:01   ( -69.87,  -1.61) 08/25/2024   23:51:48  ( -69.92,  -1.78)    8.85                73
 08/28/2024   14:28:30   ( -70.16, 139.11) 08/28/2024   14:29:20  ( -70.14, 139.13)    2.19                50
 08/28/2024   15:19:13   (  70.01, -53.35) 08/28/2024   15:18:47  (  70.03, -53.38)    2.47                26
 08/28/2024   16:09:39   ( -69.05, 115.35) 08/28/2024   16:08:32  ( -69.10, 112.99)   93.94                67
 08/31/2024   06:45:21   ( -70.10,-105.02) 08/31/2024   06:45:47  ( -70.12,-105.00)    2.66                26
 08/31/2024   07:36:05   (  70.01,  62.44) 08/31/2024   07:35:14  (  70.01,  62.48)    1.72                51
 09/02/2024   22:11:32   (  70.23,-156.73) 09/02/2024   22:12:44  (  70.20,-156.63)    4.92                72
 09/02/2024   23:02:13   ( -70.06,  10.83) 09/02/2024   23:02:15  ( -70.04,  10.78)    3.14                 2
 09/02/2024   23:52:55   (  69.86, 178.44) 09/02/2024   23:51:42  (  69.92, 178.26)    9.67                73