Explanation

World Health Day is observed on 7th April every year.

Theme 2025: Healthier beginnings, hopeful futures

Additional Information: 

World Health Organization (WHO) was founded on 7 April 1948.

WHO has its headquarters in Geneva, Switzerland. 

Explanation

"Equinox"  means Equal duration of day and night.

The time or date (twice each year) at which the sun crosses the celestial equator  when day and night are of approximately equal length.

During the equinoxes, solar declination is 0°

the September equinox is called the autumnal or fall equinox on 23 September

the March equinox is called the vernal or spring equinox on 19 March or as late as 21 March

ND-8-08-2023

Explanation

Explanation

Bastille Day is the common name given in English-speaking countries to the national day of France

Bastille Day is celebrated on 14 July each year.

In French, it is formally called the Fête nationale française; legally it is known as le 14 juillet

Celebrations: Military parades, fireworks, concerts, balls

Explanation

International Malala Day is observed every year on July 12 

celebrate the life and legacy of Pakistani education activist and Nobel laureate Malala Yousafzai.

Malala Day theme 2023:  I am Malala

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About Malala Yousafzai

Born: 1997

Belongs: Mingora, Swat

Received Noble Prize in 2014

She is the youngest Nobel Prize laureate 

Explanation

AIDS is a pandemic disease caused by the infection of (HIV), which damages the human immune system.

World AIDS Day is observed on 1 December since 1988.

Theme 2021: End Inequalities, End AIDS

Theme 2022: Equalize

Explanation

Bastille Day is the common name given in English-speaking countries to the national day of France

Bastille Day is celebrated on 14 July each year.

In French, it is formally called the Fête nationale française; legally it is known as le 14 juillet

Celebrations: Military parades, fireworks, concerts, balls

Explanation

World No Tobacco Day is observed on 31 May every year.

Theme for 2022 is Tobacco:A threat to our environment 

Theme 2023: We want food, not tobacco 

Theme 2024: Protecting children from tobacco industry interference 

Explanation

A leap year occurs almost every four years to keep our calendar aligned with the Earth's orbit around the Sun.

The extra day, February 29th, is added to account for the fact that the Earth's orbit takes approximately 365.25 days.

Explanation

World Braille Day is an international day on 4 January 

The first World Braille Day was celebrated on January 4, 2019

The 5th edition of World Braille Day was celebrated on 4 January, 2023.

The day recognizes the contributions of Louis Braille in helping blind and visually impaired people to read and write.