get
Returns the Daf Yomi Yerusalmi page (Daf) for a given date. The first Daf Yomi cycle started on 15 Shevat (Tu Bishvat), 5740 (February, 2, 1980) and calculations prior to this date will result in an IllegalArgumentException thrown. A null will be returned on Tisha B'Av or Yom Kippur.
Return
the Daf or null if the date is on Tisha B'Av or Yom Kippur.
Parameters
calendar
the calendar date for calculation
Throws
Illegal
if the date is prior to the February 2, 1980, the start of the first Daf Yomi Yerushalmi cycle