Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 2 17.  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)
 02/18/2024   16:08:02   ( -69.99, 114.07) 02/18/2024   16:08:40  ( -69.99, 114.13)    2.42                38
 02/18/2024   16:58:46   (  69.86, -78.43) 02/18/2024   16:58:08  (  69.83, -78.44)    2.38                38
 02/21/2024   07:34:23   (  70.23,  62.13) 02/21/2024   07:35:34  (  70.18,  62.66)   20.72                71
 02/21/2024   08:25:01   ( -69.93,-130.10) 02/21/2024   08:25:06  ( -69.95,-130.03)    2.69                 5
 02/21/2024   09:15:45   (  69.81,  37.40) 02/21/2024   09:14:34  (  69.79,  37.39)    2.02                71
 02/23/2024   23:51:17   (  69.99, 178.26) 02/23/2024   23:52:01  (  69.98, 178.28)    1.06                44
 02/24/2024   00:41:58   ( -69.85, -14.21) 02/24/2024   00:41:31  ( -69.86, -14.25)    2.59                27
 02/26/2024   15:17:41   ( -70.57, 125.80) 02/26/2024   15:18:51  ( -70.46, 127.22)   53.87                70
 02/26/2024   16:08:15   (  69.92, -65.89) 02/26/2024   16:08:26  (  69.91, -65.92)    1.85                11
 02/26/2024   16:58:57   ( -69.83, 101.57) 02/26/2024   16:57:55  ( -69.85, 101.63)    3.34                62
 02/29/2024   07:34:29   ( -69.99,-117.54) 02/29/2024   07:35:23  ( -69.97,-117.58)    2.84                54
 02/29/2024   08:25:13   (  69.88,  49.94) 02/29/2024   08:24:50  (  69.86,  49.91)    2.53                23