Mark your calendars for this week's holidays and happenings — some important to know, while others might just be good conversation starters. For example, did you know this Saturday, March 9, is the Barbie doll's 60th birthday and National Barbie Day?

According to Mattel, Barbie was created by Ruth Handler after she noticed her daughter Barbara's limited toy choices. "She could only play out being a mom or caregiver, whereas her son, Ken, had toys that allowed him to imagine himself as a firefighter, doctor, astronaut and more," according to the website.

On March 9, 1959, Barbie made its debut at the New York Toy Fair. Industry analysts didn't hold out much hope for success because Barbie was so different from the baby and toddler dolls that were popular at the time. But they were proven wrong. In the first year, more than 350,000 Barbies were sold. Over the past 60 years, it's believed more than a billion Barbies have been sold in 150 countries. Mattel says three Barbies are sold every second.

It hasn't all been smooth sailing for Barbie. By the 1990s, the doll was under fire for presenting an unrealistic body image for girls. By 2016, a series of different body shapes and skin tones were introduced. Also, Barbie has now held approximately 200 different careers, including president of the United States.

Other holidays this week

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  • Monday, March 4: Pound Cake Day
  • Tuesday, March 5: Fat Tuesday
  • Wednesday, March 6: Ash Wednesday
  • Thursday, March 7: Crown of Roast Pork Day
  • Friday, March 8: International Women's Day
  • Saturday, March 9: Meatball Day
  • Sunday, March 10: Daylight Saving Time begins