Explanation

World Blood Donor Day is observed on June 14 every year.

Explanation

Theme 2022: Revitalisation: Collective Action for the Ocean

Explanation

The ‘International Week of Solidarity with the Peoples of Non-Self-Governing Territories’ is observed from May 25 to May 31. 

Explanation

Explanation

“Vesak”, the Day of the Full Moon in the month of May, is the most sacred day to millions of Buddhists.

Versak was on the Day of Vesak two and a half millennia ago, in the year 623 B.C., that the Buddha was born.

Explanation

First International Day of Action for Women's Health observed: 1987

Explanation

World Hunger Day is annually observed on 28 May.

Theme 2022: Youth Ending Hunger

Theme 2023: Sustainability

Theme 2024: Thriving Mothers, Thriving World

Explanation

United Nations was established on October 24, 1945.

Explanation

Every year, World Immunization/vaccination Week is observed in last in week of April.

Theme 2022: Long Life For All

Explanation

Obstetric fistula is a hole in the birth canal caused by obstructed labour.