Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 6 6.  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)
 06/07/2023   15:17:47   (  70.12, -53.41) 06/07/2023   15:18:25  (  70.12, -53.38)    1.48                38
 06/07/2023   16:08:28   ( -69.98, 114.11) 06/07/2023   16:07:55  ( -70.01, 114.09)    3.24                33
 06/10/2023   06:44:08   ( -70.76,-105.98) 06/10/2023   06:45:17  ( -70.68,-104.33)   61.21                69
 06/10/2023   07:34:41   (  70.07,  62.43) 06/10/2023   07:34:53  (  70.08,  62.44)    1.52                12
 06/10/2023   08:25:23   ( -69.98,-130.12) 06/10/2023   08:24:23  ( -69.97,-130.08)    1.93                60
 06/12/2023   23:00:50   ( -70.14,  10.77) 06/12/2023   23:01:53  ( -70.13,  10.74)    2.02                63
 06/12/2023   23:51:34   (  70.03, 178.26) 06/12/2023   23:51:20  (  70.02, 178.23)    1.65                14
 06/13/2023   00:42:07   ( -69.46, -13.59) 06/13/2023   00:40:57  ( -69.52, -14.81)   48.20                70
 06/15/2023   15:17:44   ( -70.11, 126.60) 06/15/2023   15:18:20  ( -70.10, 126.58)    0.99                36
 06/15/2023   16:08:28   (  70.00, -65.93) 06/15/2023   16:07:47  (  69.98, -65.93)    1.45                41
 06/18/2023   06:44:02   (  70.49,  74.45) 06/18/2023   06:45:13  (  70.37,  75.22)   32.19                71
 06/18/2023   07:34:38   ( -70.08,-117.59) 06/18/2023   07:34:46  ( -70.10,-117.53)    3.45                 8
 06/18/2023   08:25:22   (  69.97,  49.88) 06/18/2023   08:24:13  (  69.98,  49.95)    2.98                69