daf
Returns the Daf Yomi (Yerushalmi) for the date that the LocalDate is set to. See the HebrewDateFormatter.formatDafYomiYerushalmi for the ability to format the daf in Hebrew or transliterated masechta names.
Return
the daf as a Daf or null if the date is on Tisha B'Av or Yom Kippur.