Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 3 1.  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)
 03/03/2023   15:18:42   (  70.10, -53.41) 03/03/2023   15:19:14  (  70.09, -53.37)    1.83                32
 03/03/2023   16:09:23   ( -69.95, 114.12) 03/03/2023   16:08:44  ( -69.98, 114.11)    2.91                39
 03/06/2023   06:44:59   ( -70.55,-105.66) 03/06/2023   06:46:10  ( -70.42,-104.66)   39.91                71
 03/06/2023   07:35:35   (  70.02,  62.48) 03/06/2023   07:35:42  (  70.04,  62.44)    2.43                 7
 03/06/2023   08:26:17   ( -69.92,-130.07) 03/06/2023   08:25:12  ( -69.93,-130.08)    0.77                65
 03/08/2023   23:01:45   ( -70.11,  10.79) 03/08/2023   23:02:42  ( -70.10,  10.77)    1.12                57
 03/08/2023   23:52:29   (  70.00, 178.26) 03/08/2023   23:52:09  (  69.99, 178.26)    1.58                20
 03/09/2023   00:42:57   ( -69.22, -13.27) 03/09/2023   00:41:49  ( -69.28, -15.07)   71.22                68
 03/11/2023   15:18:37   ( -70.05, 126.65) 03/11/2023   15:19:07  ( -70.07, 126.62)    2.28                30
 03/11/2023   16:09:21   (  69.95, -65.89) 03/11/2023   16:08:34  (  69.96, -65.90)    0.76                47
 03/14/2023   06:44:50   (  70.22,  74.85) 03/14/2023   06:46:01  (  70.21,  75.08)    8.69                71
 03/14/2023   07:35:30   ( -70.01,-117.52) 03/14/2023   07:35:33  ( -70.00,-117.59)    3.31                 3
 03/14/2023   08:26:13   (  69.86,  50.03) 03/14/2023   08:25:00  (  69.88,  49.89)    5.78                73