The Answer:

In addition to Independence Day on June 17, here are some other unique holidays celebrated in Iceland:

• Thorrablot (mid-Jan. through mid-Feb.) — a month-long homage to their Viking heritage
• Bolludagur or "Bun Day" — two days before Lent, bakeries, restaurants and the like make sweet buns for eating.
• Sprengidagur or "Bursting Day" — day before Lent, everywhere people eat "sprengidagur," which is a salted meat and peas dish.
• Beer Day (March 1) — started in 1989 after a 75-year long prohibition on beer was lifted.
• Sjomannadagur or "Seafarer's Day" (June 6) — day of competitions and celebrations in Iceland's fishing villages.

These, and other holidays, are listed on the official site of the Icelandic Tourist Board.

—The Fact Monster