Explanation

World Water Day is on 22 March every year.

It is an annual United Nations Observance, started in 1993

Purpose: the importance of freshwater

Theme 2021: 'Valuing Water'.

Theme 2022: "Groundwater, making the invisible visible”.

Theme 2023: Accelerating Change

Theme 2024: Leveraging Water for Peace

Theme 2025: Glacier Preservation

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Explanation

 International Day of Happiness is celebrated on 20 March. 

Theme 2021: Happiness For All, Forever

Theme 2022: Be calm, Be wise and Be Kind

Theme 2023: Be Mindful, Be Grateful, Be Kind 

Theme 2024: Reconnecting for Happiness: Building Resilient Communities

Theme 2025: Caring and Sharing

Explanation

International Day of Forests is observed on 21st day of March.

The International Day of Forests was established on the 21st day of March.

Established by United Nations General Assembly (UNGA)

        Theme 2025: Forests and Foods

Explanation

World Consumer Rights Day is celebrated on 15 March.

Celebrated with the aim to create global awareness about the rights and needs of consumers.

First celebrated in 1983.

Theme 2025: a just transition to sustainable lifestyles

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Explanation

Labor Day is observed on May 1.

Theme 2024: Ensuring safety and health at work in a changing climate

Labour Day began on 1 May 1886