Calendar

A calendar you can actually read

The calendar is the oldest tool for organising human life, and a good one should disappear into the background and simply tell you what you need: what day a date falls on, how many days are left in the month, and where the weekends sit. This monthly view does exactly that. Today is highlighted automatically, weekends are tinted so they are easy to spot, and the arrows let you travel forward or back through the months and years as far as you like. It is handy for planning ahead, checking which weekday a future event lands on, or just getting your bearings at the start of a busy week.

The quiet history inside every grid

Behind the simple layout lies a surprising amount of history. The calendar most of the world uses today is the Gregorian calendar, introduced to correct a small but stubborn drift in the older Julian system, which counted the year as very slightly too long. Over centuries that tiny error added up to whole days, slowly nudging the seasons out of step with the dates on the page. The fix was the leap-year rule you still rely on now: most years divisible by four gain an extra day in February, except for century years, which only get the extra day if they are also divisible by four hundred. That is why the year 2000 was a leap year but 1900 was not. This calendar applies all of those rules for you, so February always shows the correct number of days, whatever year you are looking at.

Ways to use it

People reach for a monthly calendar far more often than they realise. You might check which day of the week a wedding or a deadline falls on, count how many weekends are left before a trip, or plan a rota across a month. Students use it to map out revision; freelancers use it to see billing cycles; families use it to coordinate. To keep a printed copy, simply use your browser's print option while this page is open; the clean layout is designed to come out tidy on paper, without clutter. Pair the calendar with the date-difference tool when you need to measure an exact span of days, or with the working-days calculator when weekends should not count. Together they turn a simple grid into a genuinely useful planning surface.