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John Day

(Encyclopedia) John Day, river, 281 mi (452 km) long, rising in several branches in the Strawberry Mts., NE Oreg., and flowing W, then N to the Columbia River. Unnavigable, the river is used to…

May Day

(Encyclopedia) May Day, first day of May. Its celebration probably originated in the spring fertility festivals of India and Egypt. The festival of the Roman goddess of spring, Flora, was celebrated…

Memorial Day

(Encyclopedia) Memorial Day, holiday in the United States observed in late May. Previously designated Decoration Day, it was inaugurated in 1868 by Gen. John A. Logan for the purpose of decorating…

Columbus Day

(Encyclopedia) Columbus Day, holiday commemorating Christopher Columbus's discovery of America. It has been traditionally celebrated on Oct. 12 throughout most of the United States, parts of Canada,…

degree-day

(Encyclopedia) degree-day, a unit of measure used to estimate the fuel and power requirements in heating and cooling a building; it is equal to a difference of 1 degree between the outdoor daily…

Day, Benjamin

(Encyclopedia) Day, Benjamin, 1838–1916, American printer; son of Benjamin Henry Day. While working in New York City, Day invented a process, utilizing celluloid sheets, for shading plates in the…

Day, Doris

(Encyclopedia) Day, Doris, 1922–2019, American film actress, b. Cincinnati as Doris Mary Ann Kappelhoff. Day is best known for her wholesome, girl-next-door roles. She began her career as a 1940s…

Day, Dorothy

(Encyclopedia) Day, Dorothy, 1897–1980, American journalist and social activist, b. New York City. After studying at the Univ. of Illinois (1914–16), where she joined the Socialist party, she…