Today is Monday, May 9, the 130th day of 2016. There are 236 days left in the year.

Today’s birthdays: Producer-director James L. Brooks is 79. Actress Candice Bergen is 70. Singer Billy Joel is 67. Actress Alley Mills is 65. Actor John Corbett is 55. Actress Rosario Dawson is 37.

In 1914, President Woodrow Wilson, acting on a joint congressional resolution, signed a proclamation designating the second Sunday in May as Mother’s Day.

In 1926, Americans Richard Byrd and Floyd Bennett supposedly became the first men to fly over the North Pole. (However, US scholars announced in 1996 that their examination of Byrd’s flight diary, discovered earlier that year, suggested he had turned back 150 miles short of his goal.)

In 1951, the United States conducted its first thermonuclear experiment as part of Operation Greenhouse by detonating a 225-kiloton device on Enewetak Atoll in the Pacific nicknamed ‘‘George.’’

In 1974, the House Judiciary Committee opened public hearings on whether to recommend the impeachment of President Richard Nixon. (The committee ended up adopting three articles of impeachment against the president, who resigned.)

In 1994, South Africa’s newly elected Parliament chose Nelson Mandela to be the country’s first black president.

In 2011, Dallas Wiens, the nation’s first full face transplant recipient, joined surgeons at Brigham and Women’s Hospital in Boston in his first public appearance since the 15-hour procedure in March 2011.