Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2023 6 7.  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,-175.41) 06/08/2023   23:26:40  (  70.02,-175.44)    1.65                27
 06/09/2023   00:16:54   ( -69.90,  -7.88) 06/09/2023   00:16:10  ( -69.91,  -7.96)    3.44                44
 06/11/2023   14:52:28   ( -70.42, 132.45) 06/11/2023   14:53:39  ( -70.33, 133.24)   31.10                71
 06/11/2023   15:43:06   (  69.99, -59.57) 06/11/2023   15:43:10  (  70.01, -59.58)    1.81                 4
 06/11/2023   16:33:48   ( -69.90, 107.88) 06/11/2023   16:32:40  ( -69.90, 107.90)    0.89                68
 06/14/2023   07:09:16   ( -70.07,-111.23) 06/14/2023   07:10:14  ( -70.08,-111.25)    1.20                58
 06/14/2023   08:00:00   (  69.96,  56.25) 06/14/2023   07:59:41  (  69.97,  56.24)    1.37                19
 06/14/2023   08:50:30   ( -69.23,-135.37) 06/14/2023   08:49:21  ( -69.31,-137.02)   65.45                69
 06/16/2023   23:26:10   ( -70.04,   4.59) 06/16/2023   23:26:45  ( -70.02,   4.55)    2.69                35
 06/17/2023   00:16:54   (  69.93, 172.06) 06/17/2023   00:16:12  (  69.91, 172.04)    2.69                42
 06/19/2023   14:52:29   (  70.48, -47.65) 06/19/2023   14:53:40  (  70.37, -46.70)   37.79                71
 06/19/2023   15:43:04   ( -70.01, 120.40) 06/19/2023   15:43:15  ( -69.99, 120.39)    2.54                11
 06/19/2023   16:33:47   (  69.86, -72.06) 06/19/2023   16:32:42  (  69.88, -72.12)    3.30                65