def get_first_day_of_summer(self, year):
return Iceland.get_nth_weekday_in_month(<EOL>year, <NUM_LIT:4>, THU,<EOL>start=date(year, <NUM_LIT:4>, <NUM_LIT>))<EOL>
It's the first thursday *after* April, 18th.
        If April the 18th is a thursday, then it jumps to the 24th.