Every year on October 31, streets around the world fill with costumes, glowing pumpkins, and the sound of laughter. Halloween is one of the most recognizable holidays of all time — and one of the most commercialized, second only to Christmas in total spending. Behind all the candy and creativity, though, lies a story that began thousands of years ago with ancient beliefs about harvest, change, and the spirit world.


Origins and Meaning of Halloween

Halloween traces its roots to the Celtic festival of Samhain (pronounced “sow-in”), celebrated more than 2,000 years ago in what is now Ireland, the United Kingdom, and northern France. For the Celts, Samhain marked the end of the harvest season and the beginning of the new year on November 1 — a time when daylight faded and winter’s darkness began.

People believed that on the night before, October 31, the line between the living and the dead grew thin. Spirits were thought to wander among the living, so villagers lit great bonfires and wore costumes made of animal hides to keep the ghosts away. The night also carried a sense of mystery and magic — Druids used it for divination rituals and to predict what the coming year might bring.

As Christianity spread through Europe, the Church blended many Samhain customs into its own holidays. Pope Gregory III established All Saints’ Day on November 1 to honor all saints, and All Souls’ Day on November 2 to pray for the departed. The night before — All Hallows’ Eve — eventually became known as Halloween. Over time, this mix of pagan and Christian traditions created the foundation for the holiday we know today.


Modern Traditions and Activities

When Irish and Scottish immigrants brought Halloween to North America in the 1800s, the holiday began to change. It became less about superstition and more about community fun. The old practice of going door to door for food or coins evolved into trick-or-treating, where children dress up and collect candy from neighbors.

Another custom — carving scary faces into turnips — turned into today’s pumpkin-carving tradition. Pumpkins were plentiful in America, easier to carve, and quickly became a Halloween icon. Costumes, once meant to confuse spirits, became a way to express creativity — from funny and cute to spooky and elaborate.

Today, Halloween celebrations range from neighborhood events and school parties to haunted attractions and movie marathons. Adults join in just as eagerly as kids, decorating their homes, hosting themed gatherings, and sharing their creations online.


Why Halloween Is So Popular

Halloween’s lasting popularity comes from the perfect mix of imagination and excitement. It offers something for everyone — creative expression through costumes, community spirit through trick-or-treating, and a bit of harmless fright that adds to the fun.

The holiday’s autumn timing also helps set the mood. Shorter days, falling leaves, and crisp air create a naturally mysterious atmosphere that pairs beautifully with the season’s warm lights and cozy treats.

On a larger scale, Halloween has become a major economic event. According to the National Retail Federation, Americans spend billions of dollars every year on decorations, costumes, and candy — making it the second-largest commercial holiday after Christmas. Its strong visual appeal and social nature have helped it spread to many countries around the world.


When Is Halloween Celebrated?

Halloween is celebrated every year on October 31, no matter what day of the week it falls on. It’s sometimes mistaken for Day of the Dead or All Saints’ Day, which follow immediately after but have different meanings. Halloween focuses on fun and costumes, while those days center on remembrance and honoring loved ones who have passed away.

Below is a table showing the upcoming dates through 2030.

YearDay of the WeekDate
2026SaturdayOctober 31, 2026
2027SundayOctober 31, 2027
2028TuesdayOctober 31, 2028
2029WednesdayOctober 31, 2029
2030ThursdayOctober 31, 2030

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Last Update: November 3, 2025