Program ners_eop retrieves the Earth orientation parameters at the 
specified epoch from the Network Earth Rotation Service (NERS)
server and prints it in stdout.

Usage:

   ners_eop [-h] [-c config_file] [-p param] [-t date] [-v verb_level] [-r] [-i]

-h              prints this file and exits.

-c config_file  name of the ners client configuration file.
                If omitted, ners_eop will first search $HOME/.ners_config
                and if it does not find, uses file share/ners.config
                in ners installation directory.

-p param        EOP parameter(s) to  be displayed. Supported parameters:

                deps     nutation in obliquity (rad)

                depsr    rate of change of nutation in obliquity (rad/s)

                dpsi     nutation in longitude (rad)

                dpsir    rate of change of nutation in longitude (rad/s)

                e1       Euler  angle with respect to axis 1 (rad)                                   

                e1r      first  time derivative of the Euler angle with respect to axis 1 (rad/s)    

                e1rr     second time derivative of the Euler angle with respect to axis 1 (rad/s**2)

                e2       Euler  angle with respect to axis 2 (rad)                                   

                e2r      first  time derivative of the Euler angle with respect to axis 2 (rad/s)    

                e2rr     second time derivative of the Euler angle with respect to axis 2 (rad/s**2)

                e3       Euler  angle with respect to axis 3 (rad)                                   

                e3r      first  time derivative of the Euler angle with respect to axis 3 (rad/s)    

                e3rr     second time derivative of the Euler angle with respect to axis 3 (rad/s**2)

                e        three parameters:
                           1: Euler  angle with respect to axis 1 (rad)
                           2: Euler  angle with respect to axis 2 (rad)
                           3: Euler  angle with respect to axis 3 (rad)

                er       six parameters:
                           1: Euler  angle with respect to axis 1 (rad)
                           2: Euler  angle with respect to axis 2 (rad)
                           3: Euler  angle with respect to axis 3 (rad)
                           4: First  time derivative of the Euler angle with respect to axis 1 (rad/s)    
                           5: First  time derivative of the Euler angle with respect to axis 2 (rad/s)    
                           6: First  time derivative of the Euler angle with respect to axis 3 (rad/s)    

                err       nine parameters:
                           1: Euler  angle with respect to axis 1 (rad)
                           2: Euler  angle with respect to axis 2 (rad)
                           3: Euler  angle with respect to axis 3 (rad)
                           4: First  time derivative of the Euler angle with respect to axis 1 (rad/s)    
                           5: First  time derivative of the Euler angle with respect to axis 2 (rad/s)    
                           6: First  time derivative of the Euler angle with respect to axis 3 (rad/s)    
                           7: Second time derivative of the Euler angle with respect to axis 1 (rad/s)    
                           8: Second time derivative of the Euler angle with respect to axis 2 (rad/s)    
                           9: Second time derivative of the Euler angle with respect to axis 3 (rad/s)    

                ezrr       nine parameters:
                           1: Euler  angle with respect to axis 1 (rad)
                           2: Euler  angle with respect to axis 2 (rad)
                           3: Euler  angle with respect to axis 3 with the 
! *                                  contribution of zonal tides removed (rad)
                           4: First  time derivative of the Euler angle with respect to axis 1 (rad/s)    
                           5: First  time derivative of the Euler angle with respect to axis 2 (rad/s)    
                           6: First  time derivative of the Euler angle with respect to axis 3 
                                     with the contribution of zonal tides removed (rad/s)    
                           7: Second time derivative of the Euler angle with respect to axis 1 (rad/s**2)    
                           8: Second time derivative of the Euler angle with respect to axis 2 (rad/s**2)    
                           9: Second time derivative of the Euler angle with respect to axis 3 
                                     with the contribution of zonal tides removed (rad/s**2)

                eop3     three parameters:
                               x   pole coordinate (arcsec)
                               y   pole coordinate (arcsec)
                               ut1 angle           (s)

                eop3r    six parameters:
                               x   pole coordinate (arcsec)
                               y   pole coordinate (arcsec)
                               ut1 angle           (s)
                               rate of change of x   pole coordinate (arcsec/day)
                               rate of change of y   pole coordinate (arsec/day)
                               rate of change of ut1 angle           (s/day)

                eop3zr   six parameters:
                               x   pole coordinate (arcsec)
                               y   pole coordinate (arcsec)
                               ut1 angle with the contribution of zonal tides removed (s)
                               rate of change of x   pole coordinate (arcsec/day)
                               rate of change of y   pole coordinate (arsec/day)
                               rate of change of ut1 angle with the contribution of zonal tides removed (s/day)

                eops     eight parameters
                               x   pole coordinate (arcsec)
                               y   pole coordinate (arcsec)
                               ut1 angle           (s)
                               rate of change of x   pole coordinate (arcsec/day)
                               rate of change of y   pole coordinate (arcsec/day)
                               rate of change of ut1 angle           (s/day)
                               dpsi nutation in longitude (arcsec)
                               deps nutation in obliquity (arcsec)

                eopzs     eight parameters
                               x   pole coordinate (arcsec)
                               y   pole coordinate (arcsec)
                               ut1 angle with the contribution of zonal tides removed  (s)
                               rate of change of x   pole coordinate (arcsec/day)
                               rate of change of y   pole coordinate (arcsec/day)
                               rate of change of ut1 angle with the contribution of zonal tides removed (s/day)
                               dpsi nutation in longitude (arcsec)
                               deps nutation in obliquity (arcsec)

                h1       the contribution of the residual harmonic variation with respect to axis 1 (rad)                              

                h1r      the first  time derivative of the contribution of the residual harmonic variation with respect to axis 1 (rad/s)

                h1rr     the second time derivative of the contribution of the residual harmonic variation with respect to axis 1 (rad/s**2)

                h2       the contribution of the residual harmonic variation with respect to axis 2 (rad)                              

                h2r      the first  time derivative of the contribution of the residual harmonic variation with respect to axis 2 (rad/s)

                h2rr     the second time derivative of the contribution of the residual harmonic variation with respect to axis 2 (rad/s**2)

                h3       the contribution of the residual harmonic variation with respect to axis 3 (rad)                              

                h3r      the first  time derivative of the contribution of the residual harmonic variation with respect to axis 3 (rad/s)

                h3rr     the second time derivative of the contribution of the residual harmonic variation with respect to axis 3 (rad/s**2)

                heo      three parameters
                               the contribution of the residual harmonic variation with respect to axis 1 (rad)
                               the contribution of the residual harmonic variation with respect to axis 2 (rad)
                               the contribution of the residual harmonic variation with respect to axis 3 (rad)

                heorr    nine  parameters
                               the contribution of the residual harmonic variation with respect to axis 1 (rad)
                               the contribution of the residual harmonic variation with respect to axis 2 (rad)
                               the contribution of the residual harmonic variation with respect to axis 3 (rad)
                               the first  time derivative of the contribution of the residual harmonic variation with respect to axis 1 (rad/s)
                               the first  time derivative of the contribution of the residual harmonic variation with respect to axis 2 (rad/s)
                               the first  time derivative of the contribution of the residual harmonic variation with respect to axis 3 (rad/s)
                               the second time derivative of the contribution of the residual harmonic variation with respect to axis 1 (rad/s**2)
                               the second time derivative of the contribution of the residual harmonic variation with respect to axis 2 (rad/s**2)
                               the second time derivative of the contribution of the residual harmonic variation with respect to axis 3 (rad/s**2)

                lod      the length of day (s/day)

                mat      nine  parameters:
                               element (1,1) of the Earth rotation matrix (rad)
                               element (2,1) of the Earth rotation matrix (rad)
                               element (3,1) of the Earth rotation matrix (rad)
                               element (1,2) of the Earth rotation matrix (rad)
                               element (2,2) of the Earth rotation matrix (rad)
                               element (3,2) of the Earth rotation matrix (rad)
                               element (1,3) of the Earth rotation matrix (rad)
                               element (2,3) of the Earth rotation matrix (rad)
                               element (3,3) of the Earth rotation matrix (rad)

                matall   twenty seven parameters
                               element (1,1) of the Earth rotation matrix (rad)
                               element (2,1) of the Earth rotation matrix (rad)
                               element (3,1) of the Earth rotation matrix (rad)
                               element (1,2) of the Earth rotation matrix (rad)
                               element (2,2) of the Earth rotation matrix (rad)
                               element (3,2) of the Earth rotation matrix (rad)
                               element (1,3) of the Earth rotation matrix (rad)
                               element (2,3) of the Earth rotation matrix (rad)
                               element (3,3) of the Earth rotation matrix (rad)
                               element (1,1) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (2,1) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (3,1) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (1,2) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (2,2) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (3,2) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (1,3) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (2,3) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (3,3) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (1,1) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (2,1) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (3,1) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (1,2) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (2,2) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (3,2) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (1,3) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (2,3) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (3,3) of the second derivative of the Earth rotation matrix (rad/s**2)

                matr     nine parameters:
                               element (1,1) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (2,1) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (3,1) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (1,2) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (2,2) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (3,2) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (1,3) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (2,3) of the first  derivative of the Earth rotation matrix (rad/s)
                               element (3,3) of the first  derivative of the Earth rotation matrix (rad/s)

                matrr
                               element (1,1) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (2,1) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (3,1) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (1,2) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (2,2) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (3,2) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (1,3) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (2,3) of the second derivative of the Earth rotation matrix (rad/s**2)
                               element (3,3) of the second derivative of the Earth rotation matrix (rad/s**2)

                nut      two parameters:
                              nutation in longitude (rad)
                              nutation in obliquity (rad)

                nutr     four parameters
                              nutation in longitude (rad)
                              nutation in obliquity (rad)
                              rate of change of nutation in longitude (rad/s)
                              rate of change of nutation in obliquity (rad/s)

                ut1mtai  Angle UT1 minus TAI (s)

                ut1rat   Rate of change of UT1 minus TAI (s/s)

                xpol     X pole coordinate (rad)

                xpolr    rate of change of X pole coordinate (rad/s)

                ypol     Y pole coordinate (rad)

                ypolr    rate of change of Y pole coordinate (rad/s)

                Default parameter: ut1mtai

-t date         Date on TAI time scale.
                     Format: YYYY.MM.DD-hh:mm:ss.sssssss
                Default epoch: current moment

-v verb_level   verbosity level.

                0 -- silent
                1 -- normal verbosity
                2 -- verbose output
                3 -- debugging mode

-r              returns the time range for which the EOPs are available
  
-i              Prints information from the header of the NERS message about
                the name of the local file with NERS message, its format,
                age, URL, date of generation; names of the models, their
                versions; URLs of input EOP and AAM series, date of their
                last modification.