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year

(Encyclopedia)year, time required for the earth to complete one orbit about the sun. The solar or tropical year is measured relative to the sun and is equal to 365 days, 5 hr, 48 min, 46 sec of mean solar time (see...

Whitby, Synod of

(Encyclopedia)Whitby, Synod of, called by King Oswy of Northumbria in 663 at Whitby, England. Its purpose was to choose between the usages of the Celtic and Roman churches, primarily in the matter of reckoning the ...

Valentine, Saint

(Encyclopedia)Valentine, Saint, d. c.270, Roman martyr priest. The customs connected with him in English-speaking countries are probably a survival from a period when a pagan festival associated with love occurred ...

Sebat

(Encyclopedia)Sebat shə– [key], the 11th month of the Jewish calendar, the fifth from New Year's. It is mentioned in the Book of Zechariah. ...

Agatha, Saint

(Encyclopedia)Agatha, Saint ăgˈəthə [key], 3d cent., Sicilian virgin, martyred under Roman Emperor Decius. She is mentioned in the Martyrology of Jerome and the Calendar of Carthage in the 6th cent. Agatha is i...

Sin, in ancient Middle Eastern religions

(Encyclopedia)Sin sĭn [key], moon god of Semitic origin, worshiped in ancient Middle Eastern religions. One of the principal deities in the Babylonian and Assyrian pantheons, he was lord of the calendar and of wis...

Itzamna

(Encyclopedia)Itzamna ētsämˈnä [key], chief deity of the Maya. Son of Hunab Ku, the creator, he was believed to be lord of the heavens, day, and night. Thought by the Maya to have been the inventor of writing a...

Marvin, Charles Frederick

(Encyclopedia)Marvin, Charles Frederick, 1858–1943, American meteorologist, b. Putnam (now part of Zanesville), Ohio, grad. Ohio State Univ., 1883. He entered (1884) the U.S. Signal Service, predecessor of the We...

Sacrobosco, Johannes de

(Encyclopedia)Sacrobosco, Johannes de yōhänˈəs də săkrōbŏsˈkō [key], or John of Hollywood, c.1200–1256, English mathematician and astronomer. He wrote several widely read and influential books: Algorism...

April Fool's Day

(Encyclopedia)April Fool's Day or All Fool's Day, holiday of uncertain origin, known for practical joking and celebrated on the first of April. Prior to the adoption of the Gregorian calendar in 1564, the date was ...