Annual Theme Selection: Each year, National Science Day is celebrated with a specific theme related to scientific advancements, research areas, or societal issues. The theme is chosen to focus attention on a particular aspect of science and technology.

Relevance to Contemporary Issues: The theme of National Science Day often reflects current scientific challenges, breakthroughs, or areas of interest that are relevant to society, environment, health, or technology.

Educational Purpose: The theme serves an educational purpose by raising awareness about important scientific concepts, discoveries, or applications. It provides an opportunity for people to learn and engage with scientific topics.

Inspiration for Activities: The theme guides the planning and organization of various activities and events conducted on National Science Day, including seminars, workshops, exhibitions, and science fairs. These activities are designed to explore and elucidate the theme's significance.

Encouragement for Research: National Science Day themes often highlight specific research areas or encourage interdisciplinary collaboration. They may motivate scientists, researchers, and students to explore new avenues of inquiry within the chosen theme.

Alignment with National Priorities: The theme of National Science Day may align with the scientific priorities and goals set by the government or scientific institutions to address national challenges and contribute to sustainable development.

Global Relevance: While National Science Day is celebrated in India, the chosen theme may have global relevance, reflecting international scientific trends, partnerships, or initiatives.

Promotion of STEM Education: By focusing on specific themes, National Science Day aims to promote science, technology, engineering, and mathematics (STEM) education among students and the public. It encourages curiosity, critical thinking, and innovation in these fields.