ship images. The Makin Island Raid (occurred on 17 - 18 August 1942) was an attack by the United States Marine Corps on Japanese military forces on Makin Island (now known as Butaritari Island) in the Pacific Ocean.
Biannual is derived from the prefix bi-, which means two, twice, double, doubly, as it comes from the Latin bi-, meaning twice, double, and annual comes from the Old French twelfth century word, annuel, which derives from the Latin annus, year.
A semimonthly monthly happens twice per month -- typically, on the 15th and the last day. A biweekly payroll occurs every other week and usually includes a standard 80-hour workweek, particularly for salary employees. However, one semimonthly payroll for a certain month can include more days than the other payroll.