Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 6 8.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 06/08/2023   23:26:13   (  70.03,-175.40) 06/08/2023   23:26:40  (  70.02,-175.43)    1.43                27
 06/09/2023   00:16:55   ( -69.95,  -7.96) 06/09/2023   00:16:09  ( -69.97,  -7.88)    3.56                46
 06/11/2023   14:52:28   ( -70.42, 132.46) 06/11/2023   14:53:39  ( -70.33, 133.24)   30.96                71
 06/11/2023   15:43:06   (  69.99, -59.57) 06/11/2023   15:43:10  (  70.01, -59.58)    1.94                 4
 06/11/2023   16:33:48   ( -69.90, 107.88) 06/11/2023   16:32:40  ( -69.90, 107.90)    0.85                68
 06/14/2023   07:09:16   ( -70.07,-111.22) 06/14/2023   07:10:14  ( -70.07,-111.26)    1.28                58
 06/14/2023   08:00:00   (  69.95,  56.26) 06/14/2023   07:59:41  (  69.96,  56.24)    1.17                19
 06/14/2023   08:50:30   ( -69.23,-135.37) 06/14/2023   08:49:21  ( -69.30,-137.03)   65.78                69
 06/16/2023   23:26:10   ( -70.04,   4.59) 06/16/2023   23:26:44  ( -70.06,   4.61)    2.68                34
 06/17/2023   00:16:54   (  69.93, 172.07) 06/17/2023   00:16:11  (  69.95, 172.10)    2.84                43
 06/19/2023   14:52:29   (  70.48, -47.65) 06/19/2023   14:53:39  (  70.40, -46.64)   38.39                70
 06/19/2023   15:43:04   ( -70.01, 120.40) 06/19/2023   15:43:14  ( -70.02, 120.44)    2.27                10
 06/19/2023   16:33:48   (  69.91, -72.13) 06/19/2023   16:32:41  (  69.91, -72.07)    2.58                67