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May 17
Number of holidays
21
Day of the year
137
Days left in the year
228

International Day Against Homophobia, Transphobia and Biphobia marks May 17, 1990, when the World Health Organization removed homosexuality from its International Classification of Diseases — a date chosen to make the causal connection explicit between medical gatekeeping and social discrimination. World Hypertension Day was established by the World Hypertension League in 2005 to raise awareness for hypertension — a condition affecting 1.28 billion adults worldwide, earning its “silent killer” designation because most cases produce no symptoms until a cardiac event occurs. National Cherry Cobbler Day celebrates the baked dessert of sweetened sour cherries beneath a biscuit-dough topping — a summer variation on the cobbler tradition brought to America by British settlers. Emergency Medical Services Day honors the paramedics, EMTs, and first responders who provide emergency medical care in the field. A landmark WHO vote, 1.28 billion arteries, a baking dish, and a pair of latex gloves.

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Nuts up close on National Walnut Day
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National Walnut Day

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National Pinkfix Day

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Pack Rat Day

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Pinot Grigio Day

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Stepmother's Day

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World Baking Day

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World Topiary Day

What is the most popular holiday on May 17?

On May 17, International Day Against Homophobia, Transphobia and Biphobia is the most globally recognized civil rights observance, marking the WHO’s May 17, 1990 removal of homosexuality from its disease classification. World Hypertension Day is the most globally observed health awareness day, and Emergency Medical Services Day is the most recognized U.S. professional tribute.

What health awareness days are on May 17?

May 17 includes World Hypertension Day, coordinating blood pressure screening in more than 100 countries, NF Awareness Day, raising visibility for neurofibromatosis affecting 1 in 3,000 people, and International AIDS Candlelight Memorial, observed since 1983 with vigils in more than 100 countries.

What countries celebrate holidays on May 17?

May 17 observances span more than 100 countries for World Hypertension Day, more than 100 countries for International AIDS Candlelight Memorial, and the U.S., which hosts National Cherry Cobbler Day, Emergency Medical Services Day, and National Idaho Day. International Day Against Homophobia, Transphobia and Biphobia is observed globally.