What CountDay is
CountDay.org is a free utility for counting down to dates that matter — weddings, exams, vacations, birthdays, retirement — and counting up from milestones already passed, like the day you quit something or started something new. Pick a date, give it a name and an emoji, and the site does the math. Your countdowns live in your browser; there is no account to create.
Beyond the personal-countdown tool, the site publishes a reference page for each calendar date. Each page shows how many days remain until that date this year, a short note on what the date is known for, common traditions, and a timeline of historical events tied to it. The pages are designed to be useful on their own and to make it easy to add the date to your own list.
The site also publishes a small set of guides for people who use countdowns to actually plan something: a wedding planning timeline organised by days remaining, a 60-day pre-trip vacation checklist, a guide to counting days since for habits and milestones, and an explainer on the math behind the numbers for anyone who's ever had two calculators disagree by a day.
Who CountDay is for
People who want a focused, distraction-free way to track the time between now and a date — without signing up for an account, installing an app, or handing over an email address. If you have used a phone reminder, a sticky note, or a wedding-planner spreadsheet to keep an eye on a future date, CountDay is built for the same use case.
How content is produced
The countdown logic and date arithmetic are written in plain JavaScript and run in your browser. The reference content on each calendar-date page is compiled from publicly known facts — birthstones, zodiac signs, day-of-year numbers, widely observed holidays, and historical events from public-domain sources. We aim for accuracy on the basics; if you spot an error, the contact page tells you where to write.
We do not write personal advice and we do not pretend to be experts in fields we are not. The site is a calendar utility and a date reference. For anything time-sensitive — a legal filing, a medical appointment, a flight — verify the date with the original source. The site's terms spell out the limits of what we can promise.
How CountDay treats your data
The countdowns you create are written to your browser's local storage and stay on your device. The site loads Google Analytics so we can see which pages are read and which are not, and Google AdSense so the site can be supported by ads. Both are described in detail on the privacy policy and the cookies page.
How CountDay is funded
The site is free to use. It is funded by display advertising through Google AdSense. We do not run paid placements, sponsored posts, or affiliate links inside the date pages — the ad slots are clearly identified as ads.
Get in touch
Feedback, corrections, and feature ideas are welcome. Visit the contact page for the right address depending on what you want to write about.