December 20 National Days

As Christmas approaches, the focus shifts from large celebrations to observances that encourage spending time together.

December 20, 2025, is the 354th day of the year, with 11 days remaining until the end of the year. Falling on a Saturday in the 51st week, the date highlights themes of community, sharing, and togetherness, seen in traditions like caroling, group games, walking festivals, and even sharing a pitcher of sangria with others.

Below is a list of all 8 national and international days celebrated on December 20, each with a brief explanation.

National & International Days on December 20

Cathode-Ray Tube Day celebrates the technology that brought moving images into living rooms long before flat screens existed. Observed on the anniversary of Vladimir Zworykin’s 1938 patent, the day highlights the role CRTs played in shaping early television, computing, and visual science.

Dot Your I’d Day is a playful reminder to slow down and pay attention to the little details. Inspired by the idiom “dot your i’s and cross your t’s,” the day celebrates careful work, neat handwriting, and taking the time to finish things properly.

Festival of Winter Walks* (Celebrated from the third Saturday of December to the first Sunday of January) takes place from Saturday, December 20, 2025, to Sunday, January 4, 2026. It’s organized by the UK charity The Ramblers. The event encourages group walks and solo strolls that help people stay active, connect with others, and experience winter landscapes.

Games Day celebrates tabletop gaming. Founded by Games Workshop in 1975, it began as a small London convention and grew into a global gathering for players, painters, and fans of games like Warhammer.

Go Caroling Day brings back the tradition of gathering with others to sing holiday songs door to door. Long before playlists and speakers, caroling shared music, cheerful voices, and a sense of community during the darkest days of the year.

International Human Solidarity Day highlights the idea that progress depends on cooperation, shared responsibility, and mutual support. Proclaimed by the United Nations in 2005, the date also connects to the World Solidarity Fund, created in 2002 to support development and reduce poverty worldwide.

National Sangria Day is a great reason to pour a glass of wine mixed with fresh fruit and a little sweetness. Sangria traces its roots to Spain, with early versions dating back to the Roman Empire, and the modern observance has been officially recognized in the United States since 2013. A perfect excuse for a relaxed weekend toast as the holiday season approaches.

National Sangria Day

Super Saturday / Panic Saturday* (last Saturday before Christmas) marks a key moment for last-minute shopping. In 2025, an estimated 158.9 million U.S. consumers planned to shop on this day, making it one of the busiest retail days of the year. With online shipping deadlines already passed, many shoppers turn to physical stores, particularly local businesses, to secure gifts in time. Retailers often extend store hours, increase staffing, and offer short-term discounts, as sales from this single day can represent a significant share of total holiday revenue.

Last-minute shoppers themselves are recognized on December 24, while Super Saturday highlights the peak in-store shopping surge that occurs just before then.