This week is Holy Week for Christians, including Holy Wednesday, Maundy Thursday and Good Friday before celebrating Easter on Sunday, April 21. But mark your calendar for some lesser-known of this week's holidays, including High Five Day.

It's almost hard to imagine a sporting event without the high-five, but the gesture really hasn't been around that long. This Thursday, April 18, is High Five Day, a day to mark the most famous of all celebratory gestures.

But when and where did the high-five begin?

According to, two theories exist about its origins.

Some believe the high-five began Oct. 2, 1977, at Dodger Stadium between Glenn Burke and Dusty Baker. On the last day of the regular season, Baker hit a home run and made the Dodgers the first team in Major League Baseball history to have four players with more than 30 home runs in a season. When Baker circled the bases and came home, Burke was there to greet him with his hand in the air. Baker smacked Burke's hand.

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However, others credit the University of Louisville Cardinals "Doctors of Dunk" with creating the gesture in 1978. Basketball players Wiley Brown and Derek Smith smacked hands as a variation of the low-five, which had been a popular hand gesture with African Americans following World War II. According to players, Brown was going to give Smith a regular low-five during practice when Smith looked at Brown and said, "No, up high."

Both versions are well-documented, so the true origin of the high-five might never be settled.

Other holidays this week

  • Monday, April 15: Tax Day
  • Tuesday, April 16: Wear Your Pajamas to Work Day
  • Wednesday, April 17: Cheeseball Day
  • Thursday, April 18: Lineman Appreciation Day
  • Friday, April 19: Garlic Day
  • Saturday, April 20: Auctioneers Day
  • Sunday, April 21: Kindergarten Day