2026 Days and Dates - US
 18 is ...Zodiac & Astrology for December 18 2026Sun / Zodiac Sign:SagittariusMoon Phase:Waxing Gibbous66% Illuminatedi Moon Sign:AriesDaily Planning Alert - Moon Void of Course:Caution is advised for late-day endeavors, as the Moon enters a period of less direct influence after . Embrace the assertive Aries Moon for initiating projects and refining your plans, but aim to finalize important decisions before evening to ensure clarity. The spirited Aries Moon, amplified by the expansive Sagittarius Sun, ignites a strong drive for pioneering new ideas and projects. Under the influence of Venus in Aquarius, seek stimulating intellectual connections, as dynamic interactions with fellow Fire signs like Leo or Air signs like Gemini prove especially fulfilling. Channel the Waxing Gibbous energy into refining your health and financial routines, leveraging Mercury in Capricorn for practical adjustments and Jupiter in Gemini for exploring new knowledge.December 18, 2026 United States Holidays & Popular ObservancesDecember 18, 2026 Popular Holidays & Observances Worldwide
Major Sports Events on December 18, 2026NHL Chicago Blackhawks AT Ottawa Senators Venue: Canadian Tire Centre Seattle Kraken AT Pittsburgh Penguins Venue: PPG Paints Arena Detroit Red Wings AT Philadelphia Flyers Venue: Xfinity Mobile Arena Nashville Predators AT New York Rangers Venue: Madison Square Garden Montreal Canadiens AT Buffalo Sabres Venue: Keybank Center Anaheim Ducks AT Minnesota Wild Venue: Grand Casino Arena Carolina Hurricanes AT Colorado Avalanche Venue: Ball Arena New York Islanders AT Vegas Golden Knights Venue: T-Mobile Arena Top Investing, Business & Finance events on December 18Quadruple WitchingThis market phenomenon occurs when stock options, stock index futures, and stock index options contracts all expire on the same day. Traders and institutional investors closely monitor this event as it typically generates some of the highest trading volumes and price volatility of the calendar year. S&P 500 Quarterly RebalancingMajor stock indices undergo a rebalancing process to ensure that constituent weights accurately reflect current market capitalizations. This leads to a massive surge in automated trading activity as index funds and ETFs adjust their holdings to match the updated benchmarks. Top Health & Fitness events on December 18ACA Open Enrollment Verification PeriodFollowing a major mid-month deadline, millions of Americans visit digital health portals to confirm their insurance selections for the upcoming year. This period sees a surge in activity as individuals finalize their healthcare plans and ensure their coverage is active for the new year. FSA/HSA End-of-Year Spending PeakConsumers focus on utilizing their remaining flexible spending account balances before the "use-it-or-lose-it" deadlines approach. This leads to a significant increase in searches for eligible medical products and a rush on health-related appointments and elective procedures. Top Politics & Government happenings on December 18Federal Budget Funding DeadlineCongress faces a critical deadline to pass long-term appropriations or a continuing resolution to ensure the continued operation of federal agencies. This period often involves high-stakes negotiations regarding discretionary spending and national policy priorities to avoid a government shutdown. Top Entertainment & Live Events on December 18Premiere of Untitled Star Wars FilmTheaters NationwideThe release of a new theatrical entry in this storied space opera franchise is expected to dominate both the box office and social media trends. Fans and critics alike will be analyzing the expansion of the lore and the introduction of new characters to the cinematic universe. New Music Friday ReleasesMajor recording artists across various genres release new singles and albums to capitalize on the peak holiday listening season. These releases dictate the momentum of the music charts and drive significant streaming traffic and digital sales. Radio City Christmas SpectacularRadio City Music Hall, New York, NYThis iconic stage production features precision dance routines and elaborate holiday-themed sets that draw thousands of visitors daily. It is a cornerstone of seasonal tourism and represents one of the most successful live entertainment traditions in the country. Top Conventions & Other Happenings on December 18AGU Fall Meeting (day 5 of 5)Moscone Center, San Francisco, CAThis is the world's largest gathering of Earth and space scientists, consistently generating global news coverage regarding climate change, planetary exploration, and environmental policy. It is a vital hub for researchers to present groundbreaking data and collaborate on solutions for the planet's most pressing scientific challenges. Holiday Matsuri (day 1 of 3)Orlando World Center Marriott, Orlando, FLKnown affectionately as "HolMat," this festive anime and gaming convention is famous for its unique holiday-themed cosplay and seasonal social events. It garners significant social media interest as thousands of attendees and influencers showcase elaborate, winter-inspired versions of popular fictional characters. Con Alt Delete (day 1 of 3)Hyatt Regency O'Hare, Rosemont, ILThis high-energy convention serves as a major end-of-year celebration for the Midwest anime community, featuring intensive gaming tournaments and interactive fan workshops. The event is popular for its vibrant atmosphere and late-night programming that caters to a dedicated base of pop culture enthusiasts. ‹ | › | |
