Calendar

A calendar you can read, write on or print

This is a plain monthly and yearly calendar for any year between 2000 and 2100. Pick a month to see it as a full grid with room in each day box, or switch to the year view for all twelve months at once. Click any day in the month view to save your own events on it. Nothing is sent anywhere and the whole thing works offline once the page has loaded — there is no account, no sign-in and no server holding your diary.

The Print button produces a clean sheet: the controls, the site header and the explanatory text all drop away, leaving just the grid with black-on-white ruling that survives a cheap printer. A printed month gives you a large box per day to write in; a printed year gives you a one-page wall planner with the holiday list underneath, because the twelve-up boxes are far too small to name anything inside.

Sunday or Monday — and why the grid changes shape

Calendars in the United States conventionally start the week on Sunday; most of Europe, and the ISO 8601 standard, start it on Monday. Neither is more correct, so the week start is a toggle rather than a decision made for you.

It is not only the column order that changes. Because the grid is padded out to whole weeks, moving the start day can change how many rows a month needs. February 2026 is the clearest example on the calendar: it has 28 days and begins on a Sunday, so a Sunday-first grid holds it in exactly four rows with no days borrowed from January or March at all — a shape a common year only produces when the 1st lands precisely on the first day of the display week. Start the same month on Monday and it needs five rows, with 26 January through 1 February leading and 1 and 2 March trailing. At the other extreme, a 31-day month beginning on the last day of the display week needs six rows: August 2026, Sunday-first, runs from 26 July to 5 September.

ISO week numbers

Turning on Week numbers adds a narrow column giving each row its ISO 8601 week number — the numbering used in payroll, manufacturing schedules and project plans, and the one people mean when they say "week 32".

The rule is that week 1 of a year is the week containing that year's first Thursday, and ISO weeks always run Monday to Sunday no matter which day your display starts on. Both halves have consequences that look like bugs and are not. A year's opening days can belong to the previous year's final week: 1 January 2027 is a Friday, and sits in week 53 of 2026, with 2027's own week 1 not beginning until Monday 4 January. The reverse happens at the other end — 31 December 2029 is a Monday, and is already week 1 of 2030. And because 52 weeks is only 364 days, roughly every fifth or sixth year has a 53rd week: between 2020 and 2035 the long years are 2020, 2026 and 2032.

If you display the week starting on Sunday and turn week numbers on, the number shown is the ISO week that the row's Monday falls in. The standard defines its weeks Monday-first, and renumbering them to match a Sunday-first display would produce figures that disagree with every payroll system that uses them.

The holidays that are marked

With Holidays on, 24 US federal holidays and widely-marked observances are named in the day box, and listed underneath the grid with their dates. December 2026 carries Christmas Eve on the 24th, Christmas on the 25th, Boxing Day on the 26th and New Year's Eve on the 31st; November 2026 has Veterans Day on the 11th, Thanksgiving on the 26th and Black Friday on the 27th. Plenty of months carry none at all — August 2026 is empty.

None of these dates are stored as a table that goes stale. Each holiday is held as a rule and the date is worked out for whichever year you are looking at, which is why the calendar answers for any year in its range rather than a handful someone typed in. Fixed-date holidays like Christmas never move. Thanksgiving is the fourth Thursday of November — not the last, which is a different day when November has five Thursdays. Memorial Day is the last Monday of May, not the fourth. Easter is derived with the Gregorian computus and roams between 22 March and 25 April: in 2027 it falls on 28 March, and in 2029 on 1 April, sharing the day with April Fools' Day, which is why a day box can carry two holidays at once.

Days spilling in from the neighbouring months are marked too, and their holidays come from their own year's rules. The last row of December 2026 runs into January 2027, and 1 January shows as New Year's Day there even though the grid is labelled with the previous year.

Every holiday name links to a countdown page for that holiday. For the observed dates — when a federal holiday falls on a weekend and offices actually close on the adjacent Friday or Monday instead — see the US Holidays tool, which also exports the year as an iCalendar file you can import into Google Calendar, Apple Calendar or Outlook.

Sharing a particular month

The address bar tracks whatever you are looking at: a month reads as #2027-03 and a year as #2027. Copy the link and whoever opens it lands on the same view rather than on the current month. Because it is a URL fragment it is never sent to the server — there is nothing to log, and the page still works with no network at all.

Your own events

Click any day in the month view and a small editor opens for that date. An event needs a title; a time and a note are optional. Leave the time blank and it is an all-day event, which is what a birthday or a deadline usually is. Adding it closes the editor and drops it onto the grid; reopen the day to add another, or to edit or remove what is there. Days with something on them show it in the box, up to two events at a time with a "+2 more" line beneath, and the year view marks them with a small square so you can see at a glance which weeks are busy. Everything you save prints too, and sticks around in this browser — or follows you between devices if you sign in.

If you would rather not use a mouse, the grid works from the keyboard: tab to it once and then move between days with the arrow keys, Home and End for the ends of a week, and Enter or Space to open the day.

Where your events are kept, and how to get them out

By default they are stored in this browser, on this device, and nowhere else. There is no server of ours holding a copy — which is the point, and also the risk: clearing site data deletes them, and a browser that is short of disk space can evict them without asking. The storage page shows whether your browser has agreed to keep them and lets you ask it to.

So there are two ways to take them with you. Export .ics writes an iCalendar file that Google Calendar, Apple Calendar and Outlook all import — the way to get an event onto your phone. Export backup writes a JSON file that this tool can read back exactly, which is what to use before wiping a browser or moving to a new machine; Import backup reads one, either merging it with what is already here or replacing everything. Importing the same backup twice changes nothing, because every event carries its own identifier rather than being matched on its title.

Reading a calendar file in is not supported, only writing one out. A file from another calendar carries repeating events, time zones, alarms and invitations, and quietly dropping all of that while calling it an import would be worse than not offering it.

Keeping the same events on more than one device

Sign in with Google and your events are copied to your own Google Drive, in the private application folder that only this site can see. Open the calendar on another device, sign in with the same account, and they are there. There is still no server of ours in the middle: the data goes from your browser to your Drive and back, and you can revoke access or delete the copy from your account page at any time.

Both devices' events are kept when they differ — the two sets are merged rather than one replacing the other. If the same event was changed in two places, the more recent edit wins, and a deletion counts as an edit, so deleting on your phone deletes on your laptop rather than the laptop putting it back. What this does not do is watch for changes while the page is open: another device's edits appear the next time you load the page, not seconds after they happen. Signing out leaves everything in this browser untouched.

Other tools that keep dates

This is a calendar, not a planner: there is no sharing with other people and no reminders. The To-Do List handles tasks with due dates and syncs the same way, the Meal Planner handles a week of meals at a time, and Date Difference counts the days between two dates.