Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 5.  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)
 04/06/2024   15:18:17   (  70.04, -53.51) 04/06/2024   15:19:01  (  70.01, -53.52)    2.97                44
 04/06/2024   16:08:59   ( -69.94, 113.96) 04/06/2024   16:08:30  ( -69.96, 114.04)    3.54                29
 04/09/2024   06:44:42   ( -70.86,-106.35) 04/09/2024   06:45:49  ( -70.77,-104.18)   79.90                67
 04/09/2024   07:35:12   (  70.02,  62.29) 04/09/2024   07:35:28  (  70.00,  62.34)    2.85                16
 04/09/2024   08:25:53   ( -69.87,-130.16) 04/09/2024   08:24:58  ( -69.90,-130.17)    3.41                55
 04/11/2024   23:01:23   ( -70.06,  10.69) 04/11/2024   23:02:29  ( -70.08,  10.69)    2.37                66
 04/11/2024   23:52:07   (  69.96, 178.16) 04/11/2024   23:51:56  (  69.97, 178.17)    1.02                11
 04/12/2024   00:42:43   ( -69.54, -13.90) 04/12/2024   00:41:31  ( -69.59, -14.71)   32.16                72
 04/14/2024   15:18:18   ( -70.00, 126.55) 04/14/2024   15:18:57  ( -70.03, 126.49)    3.34                39
 04/14/2024   16:09:02   (  69.90, -65.99) 04/14/2024   16:08:24  (  69.91, -66.03)    1.56                38
 04/17/2024   06:44:39   (  70.49,  74.26) 04/17/2024   06:45:49  (  70.37,  75.24)   38.96                70
 04/17/2024   07:35:14   ( -70.01,-117.68) 04/17/2024   07:35:24  ( -70.00,-117.66)    1.26                10
 04/17/2024   08:25:57   (  69.86,  49.85) 04/17/2024   08:24:51  (  69.88,  49.82)    2.60                66