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Sun Day

Soak up the sun and make a splash this Sun Day! Whether at the beach or pool, it's time to relax and enjoy the warmth of summer.

Monday

May 2027

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEMay 3

OBSERVED INUnited States

CATEGORYNature

SUBCATEGORYConservation

INTRO

Introduction

PHOTO

Get ready to soak up some sunshine and celebrate Sun Day on May 3! This holiday was first created in the 1970s by environmentalists who wanted to promote solar power as a clean and renewable energy source. However, it has evolved into a day to appreciate the warmth and light that the sun provides us, and to be mindful of protecting our planet's natural resources. So go outside, enjoy the beautiful weather, and maybe even join in on some eco-friendly activities like planting trees or picking up litter at your local park. Let's make this Sun Day one to remember!

TIMELINE

Sun Day Timeline

First Earth Day

Earth Day is celebrated for the first time, raising awareness for protecting the environment, including promoting renewable energy sources like solar power.

Inception of Sun Day

Sun Day is established by US Senator Gaylord Nelson and environmental activist Denis Hayes to promote solar energy use and conservation of natural resources.

Solar One Launches

In New York City, Solar One, a solar-powered energy research center, is opened, highlighting the potential of solar energy.

National Sun Day Resolution

The U.S. House of Representatives passes a resolution recognizing Sun Day and its mission to promote a “solar energy future.”

Solar Power Advancements

Throughout the 2000s, many advancements are made in solar power technology, making it an increasingly viable energy source.

Continued Celebrations

Sun Day is celebrated annually to appreciate the sun and recognize the importance of renewable energy sources and environmental preservation.

GET INVOLVED

How to Celebrate Sun Day

Host a picnic in the sun

Gather your friends and family and head to a park or beach for a fun picnic in the sun! Bring along some blankets, delicious food, and games to enjoy while basking in the warm sunlight.

Go on a sunrise or sunset hike

Start or end your day with a beautiful hike to watch the sunrise or sunset. This is a great way to appreciate the beauty of the sun and get some exercise in nature.

HAVE

Have a day of self-care in the sun

Take some time for yourself and enjoy a day of self-care in the sun. This could include lounging by the pool, reading a book in the park, or treating yourself to a relaxing spa day.

PLANT

Plant a sun-loving garden

Celebrate the power of the sun by starting a garden filled with plants that thrive in sunlight. This is a great way to connect with nature and bring some life and color to your home.

CREATE

Create sun-themed crafts

Get creative and make some fun sun-themed crafts to celebrate the day. You could paint sun catchers, make paper plate suns, or even design your own t-shirts with sun designs.

WHY THIS DAY MATTERS

Why Sun Day is Important

It celebrates diversity

The Sun is present in different forms across various cultures and religions, making Sun Day a great opportunity to celebrate diversity and learn about different beliefs and traditions. It teaches us the importance of respecting and appreciating different perspectives.

It promotes sustainability

Sun Day is all about raising awareness for renewable energy and reducing our reliance on non-renewable resources. By celebrating this holiday, we can encourage others to take action towards a cleaner and more sustainable future.

It's a reminder to enjoy the outdoors

The sun plays such an important role in our lives - it provides us with warmth, light, and essential nutrients through its rays. Sun Day encourages us to get outside, soak up some Vitamin D, and appreciate the natural world.

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