is(is_holiday(2030, 1, 1),
q{New Year's Day}
);
is(is_holiday(2030, 1, 21),
q{Birthday of Martin Luther King, Jr.}
);
is(is_holiday(2030, 1, 20),
undef
);
is(is_holiday(2030, 2, 18),
q{Washington's Birthday}
);
is(is_holiday(2030, 5, 27),
q{Memorial Day}
);
is(is_holiday(2030, 6, 19),
q{Juneteenth National Independence Day}
);
is(is_holiday(2030, 7, 4),
q{Independence Day}
);
is(is_holiday(2030, 9, 2),
q{Labor Day}
);
is(is_holiday(2030, 10, 14),
q{Columbus Day}
);
is(is_holiday(2030, 11, 11),
q{Veterans Day}
);
is(is_holiday(2030, 11, 28),
q{Thanksgiving Day}
);
is(is_holiday(2030, 12, 25),
q{Christmas Day}
);
is(
scalar
(
keys
%{holidays(2030)}), 11);