Why we celebrate diwali on scientific reason
- Introduction
Diwali (Deepawali) is primarily a cultural and spiritual festival celebrating the triumph of light over darkness and good over evil, rooted in traditions like the return of Lord Rama to Ayodhya, Lord Krishna's victory, or Jain and Sikh milestones. However, traditional rituals also serve practical, seasonal, and health-oriented functions aligned with the shift from post-monsoon to winter.
Seasonal Transition and Health
• Weather and Germ Control: Falling in October or November, Diwali marks the transition from the humid post-monsoon season to cooler winter nights. This damp climate traditionally caused a rise in airborne bacteria, mold, and seasonal illnesses.
Lighting Diyas (Deepas): Burning traditional clay oil lamps (diyas) and specialized oils (such as neem or herbal-infused blends) produces gentle heat and mild combustion byproducts that help sanitize the immediate indoor air and repel insects and mosquitoes.
Agricultural and Ecological Cycles
- Pest and Insect Management: The post-monsoon period sees Pest and Insect Management: The post-monsoon period sees a surge in insect populations that can threaten late-season crops. Bright lights naturally draw insects away from stored grains and fields, and traditional practices historically tied this to natural pest reduction. surge in insect populations that can threaten late-season crops. Bright lights naturally draw insects away from stored grains and fields, and traditional practices historically tied this to natural pest reduction.
- Harvest and Cleaning: Diwali coincides with the completion of the autumn harvest. Deep-cleaning homes (pruning, whitewashing, and sweeping) before winter helps eliminate stagnant water, dampness, and accumulated allergens left behind by the rains.
- Mind and Body Wellness
- Circadian and Mental Clarity: Traditional philosophies note that the changing season can bring a sluggishness or "slowness of life" as daylight shortens. Gathering for communal celebrations, lighting rows of lamps (Deepavali), and active morning rituals (such as oil baths or Abhyanga Snanam) help maintain physical activity, warmth, and mental alertness.
