Explanation

International Astronomy Day is celebrated twice a year: once in spring (around May 2) and once in autumn (around September 26).

The aim is to spread awareness and interest in astronomy among the public.

Explanation

World Pharmacists Day is annually celebrated on September 25 annually.

It is celebrated with the purpose to raise awareness about the essential contributions of pharmacists to public health.

It is celebrated to commemorate the founding of International Pharmaceutical Federation (FIP) in 1912.

Theme 2025: Think Health, Think Pharmacist

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Explanation

International Day of Peace (or World Peace Day), celebrated  on September 21st each year,

 dedicated to strengthening the ideal of peace between all nations and people.

International Day of Peace Established in 1981 by United Nations resolution

Theme 2024: Cultivating a Culture of Peace

Theme 2025: Act now for a peaceful World.

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Explanation

Saudi National Day is a public holiday in Saudi Arabia celebrated annually on 23 September

23 September was first observed when King Faisal issued a royal decree on 21 August 1965 

2005: King Abdullah announces that Saudi National Day became an official holiday.

while

Saudi Arabia's Capital is Riyadh.

Saudi Arabia's Currency is Saudi Riyal.

Saudi Arabia's official language is Arabic.

Saudi Arabia located is in Continent Asia.

Saudi Arabia's Primary Religion is Islam.

Saudi Arabia's Head of Govt. is King and Prime Minister – Mohammed bin Salman.

Saudi Arabia Parliament called Majlis Al Shura.

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Explanation

•  World Alzheimer Day is observed on 21 September to raise awareness about the challenges that patient faces due to dementia.
• Theme 2025: Ask About Dementia, Ask about Alzheimer's
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