<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def _timedatectl():
    '''
    get the output of timedatectl
    '''
    ret = __salt__['cmd.run_all'](['timedatectl'], python_shell=False)

    if ret['retcode'] != 0:
        msg = 'timedatectl failed: {0}'.format(ret['stderr'])
        raise CommandExecutionError(msg)

    return ret