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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, and in several o...

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 average temperature ...

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 band singer, and ...

Day, Thomas

(Encyclopedia)Day, Thomas, 1748–89, English social reformer and author. He supported the American Revolution and the abolition of slavery and was interested in improving the lot of the small farmer. His moralisti...

day lily

(Encyclopedia)day lily: see lily.

D-day

(Encyclopedia)D-day: see Normandy campaign.

Earth Day

(Encyclopedia)Earth Day, Apr. 22, a day to celebrate the environment. The first Earth Day was organized in 1970 to promote the ideas of ecology, encourage respect for life on earth, and highlight growing concern ov...

Flag Day

(Encyclopedia)Flag Day, anniversary of the adoption of the American flag in 1777. It is celebrated on June 14 but is not a legal holiday.
 

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