CL_dat_tai2utc — TAI to UTC conversion
[cjdutc]=CL_dat_utc2tai(cjdtai)
UTC / TAI correspondance is read in the global constant %CL_TAI_UTC (vector). You can modify the UTC / TAI correspondance by modifying the global constant %CL_TAI_UTC
Note : TAI time is not defined until 1972 (cjd=8035 or later); if cjd is before 8035 output is equal to input parameters