code: def mlk_day(gyear):
      r"""Get Martin Luther King Day for a given year.
  
      Parameters
      ----------
      gyear : int
          Gregorian year.
  
      Returns
      -------
      mlkday : int
          Martin Luther King Day in RDate format.
      """
      mlkday = nth_kday(3, 1, gyear, 1, 1)
      return mlkday
  
imports: import calendar
  import logging
  import math
  import pandas
label_desc: Use image node_id 29 for calling a global function with example usage: mlk_day(gyear) and returns: mlkday