• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Health

It’s Blue Monday, the Most Miserable Day of the Year

By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
January 15, 2018, 10:29 AM ET
Blue Monday
Blue MondayGetty Images/iStockphoto

It’s a holiday in the U.S., but if you’re feeling gloomy nonetheless, you’re hardly alone.

Besides being Martin Luther King, Jr. Day, today is also Blue Monday, a day many believe to be the most depressing day of the year.

The term got started in the 2005. Dr. Cliff Arnall, a South Wales lecturer, determined that the third Monday of January was the worst day of the year, due to factors including most people are back to work, the realization that the holiday season is most certainly over and awareness of just how far over budget we went in our holiday shopping.

There’s even a Blue Monday formula Arnall came up with – [W + (D-d)] x Tq ÷ [M x Na]. W represents weather, D means debt, d equals monthly income, T is the time since Christmas and q is the time period since we’ve broken our New Year’s Resolutions. M stands for motivational levels, and Na is the feeling of needing to take action.

Sound like hooey? Many agree with you — especially since several of the numbers used in that Blue Monday formula fluctuate per person and, presumably, there are still a few resolutions left unbroken out there.

Still, Blue Monday gives you an excuse if you’re moody today. And if you’d like to plan ahead for future bad moods, Blue Monday will fall on Jan. 21 next year and Jan. 20 in 2020.

About the Author
By Chris MorrisFormer Contributing Writer

Chris Morris is a former contributing writer at Fortune, covering everything from general business news to the video game and theme park industries.

See full bioRight Arrow Button Icon

Latest in

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
Fortune Secondary Logo
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in

sam altman
AIOpenAI
Sam Altman tells staff at an all-hands that OpenAI is negotiating a deal with the Pentagon, after Trump orders the end of Anthropic contracts
By Sharon GoldmanFebruary 27, 2026
5 hours ago
Future of Workthe future of work
Have good taste? It may just get you a job during the AI jobs apocalypse, says Sam Altman
By Marco Quiroz-GutierrezFebruary 27, 2026
5 hours ago
CybersecurityMeta
Trump’s FTC backs off social media regulation despite finding that nearly 20% of America’s children are online for 4 hours or more
By Catherina GioinoFebruary 27, 2026
5 hours ago
Emil Michael smirks
AIAnthropic
Emil Michael, the Silicon Valley exec turned Trump official leading the war against Anthropic, has deep ties to the tech world
By Lily Mae LazarusFebruary 27, 2026
6 hours ago
C-SuiteFortune 500 Power Moves
Fortune 500 Power Moves: Which executives gained and lost power this week
By Fortune EditorsFebruary 27, 2026
6 hours ago
AIMilitary
Trump orders U.S. government to stop using Anthropic but gives Pentagon six months to phase it out while Hegseth adds supply-chain risk designation
By Jason MaFebruary 27, 2026
6 hours ago

Most Popular

placeholder alt text
Innovation
An MIT roboticist who cofounded bankrupt robot vacuum maker iRobot says Elon Musk’s vision of humanoid robot assistants is ‘pure fantasy thinking’
By Marco Quiroz-GutierrezFebruary 25, 2026
2 days ago
placeholder alt text
Success
Jeff Bezos says being lazy, not working hard, is the root of anxiety: ‘The stress goes away the second I take that first step’
By Sydney LakeFebruary 25, 2026
2 days ago
placeholder alt text
Commentary
'The Pitt': a masterclass display of DEI in action 
By Robert RabenFebruary 26, 2026
2 days ago
placeholder alt text
Economy
It’s more than George Clooney moving to France: America is becoming the ‘uncool’ country that people want to move away from
By Nick LichtenbergFebruary 27, 2026
20 hours ago
placeholder alt text
Success
Gen Z Olympic champion Eileen Gu says she rewires her brain daily to be more successful—and multimillionaire founder Arianna Huffington says it really does work
By Orianna Rosa RoyleFebruary 25, 2026
3 days ago
placeholder alt text
Law
China's government intervenes to show Michigan scientists were carrying worms, not biological materials
By Ed White and The Associated PressFebruary 26, 2026
1 day ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.