Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 2 23.  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)
 02/26/2023   06:44:58   (  70.38,  74.62) 02/26/2023   06:46:09  (  70.31,  75.20)   23.58                71
 02/26/2023   07:35:35   ( -70.03,-117.52) 02/26/2023   07:35:42  ( -70.02,-117.57)    1.81                 7
 02/26/2023   08:26:19   (  69.91,  49.96) 02/26/2023   08:25:09  (  69.92,  49.93)    1.42                70
 02/28/2023   23:01:48   (  70.12,-169.21) 02/28/2023   23:02:36  (  70.11,-169.18)    1.42                48
 02/28/2023   23:52:29   ( -69.97,  -1.67) 02/28/2023   23:52:06  ( -70.00,  -1.70)    3.18                23
 03/03/2023   14:28:13   ( -70.97, 137.88) 03/03/2023   14:29:20  ( -70.87, 140.20)   84.98                67
 03/03/2023   15:18:42   (  70.08, -53.38) 03/03/2023   15:19:00  (  70.05, -53.37)    3.32                18
 03/03/2023   16:09:23   ( -69.93, 114.16) 03/03/2023   16:08:30  ( -69.94, 114.11)    2.25                53
 03/06/2023   06:44:50   ( -70.10,-104.96) 03/06/2023   06:45:55  ( -70.12,-105.00)    2.99                65
 03/06/2023   07:35:34   (  69.99,  62.51) 03/06/2023   07:35:22  (  70.00,  62.48)    1.71                12
 03/06/2023   08:26:09   ( -69.52,-129.48) 03/06/2023   08:24:58  ( -69.57,-130.49)   39.77                71
 03/08/2023   23:01:44   ( -70.08,  10.84) 03/08/2023   23:02:17  ( -70.10,  10.88)    2.93                33
 03/08/2023   23:52:28   (  69.98, 178.31) 03/08/2023   23:51:44  (  69.98, 178.36)    1.98                44