Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 12 21.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2023   07:09:41   ( -70.85,-112.68) 12/23/2023   07:10:48  ( -70.73,-110.36)   85.92                67
 12/23/2023   08:00:09   (  69.89,  56.13) 12/23/2023   08:00:28  (  69.91,  56.09)    2.58                19
 12/23/2023   08:50:51   ( -69.80,-136.42) 12/23/2023   08:49:58  ( -69.80,-136.43)    0.39                53
 12/25/2023   23:26:20   ( -70.00,   4.43) 12/25/2023   23:27:30  ( -69.99,   4.44)    1.57                70
 12/26/2023   00:17:04   (  69.89, 171.91) 12/26/2023   00:16:57  (  69.88, 171.93)    1.32                 7
 12/26/2023   01:07:42   ( -69.58, -20.32) 12/26/2023   01:06:29  ( -69.66, -20.74)   18.09                73
 12/28/2023   15:43:14   ( -69.95, 120.28) 12/28/2023   15:43:58  ( -69.98, 120.31)    3.24                44
 12/28/2023   16:33:57   (  69.84, -72.25) 12/28/2023   16:33:24  (  69.87, -72.20)    3.25                33
 12/31/2023   07:09:37   (  70.64,  67.65) 12/31/2023   07:10:46  (  70.54,  69.37)   64.60                69
 12/31/2023   08:00:07   ( -69.92,-123.89) 12/31/2023   08:00:25  ( -69.94,-123.86)    2.87                18
 12/31/2023   08:50:51   (  69.81,  43.58) 12/31/2023   08:49:52  (  69.82,  43.62)    2.48                59
 01/02/2024   23:26:19   (  69.99,-175.54) 01/02/2024   23:27:23  (  69.97,-175.56)    2.54                64
 01/03/2024   00:17:01   ( -69.89,  -8.08) 01/03/2024   00:16:53  ( -69.87,  -8.07)    2.81                 8
 01/03/2024   01:07:37   (  69.36, 160.01) 01/03/2024   01:06:26  (  69.42, 158.96)   41.63                71