Printable Calendar

DateMath lays out every month of the Gregorian calendar from the weekday of its 1st and the length of the month, with February's 29th in leap years. Each row is one week, so its number is exact: the US week (Sunday to Saturday, week 1 holds January 1) when weeks start on Sunday, and the ISO 8601 week (Monday to Sunday, week 1 holds the first Thursday) when they start on Monday. The federal holidays are the ones the business days calculator skips, on their own dates and on the days they are observed.

• The Gregorian calendar. DateMath treats every date as a Gregorian date, with its leap-year rule: a year divisible by 4 is a leap year, except century years not divisible by 400, so 2000 had a February 29 and 2100 will not. Source: Gregorian calendar.
• ISO 8601 week dates. DateMath numbers weeks by ISO 8601: weeks start on Monday, week 1 is the week with the year's first Thursday, and a year has 52 or 53 weeks. Source: ISO 8601.
• US federal holidays. DateMath skips the 11 annual holidays of 5 U.S.C. 6103 on the days they are observed for federal employees, as the US Office of Personnel Management (OPM) lists them: a Saturday holiday on the Friday before, a Sunday holiday on the Monday after. Source: 5 U.S.C. 6103, OPM federal holidays.

DateMath's date math is tested against more than 100 cases worked out by hand. Every worked example and table on the site is computed with the same code the calculators run, so a page and its calculator can't disagree.

The calendar opens on this year. Type another year to see it, pick a month to see it larger, and switch the week start between Sunday, as US calendars print it, and Monday, as in Europe and ISO 8601. Press Print and only the calendar goes to the printer: a whole year fits on one landscape page, a month on a portrait page, and your browser's print dialog can save it as a PDF instead.

• US federal holidays are shaded, on their own date and on the weekday they are observed when they fall on a weekend, and listed under each month.
• Week numbers sit at the start of every row: the US week when weeks start on Sunday, the ISO 8601 week when they start on Monday. That makes it a calendar with week numbers for any year, such as 2025.
• Today is outlined, from your device's date.

A year's calendar depends on two things only: the weekday of January 1 and whether it is a leap year. Years that share both have the same calendar, so an old one can be reused.

Each of these years has a page with all twelve months, its holidays and the years that share its calendar:

• 1987 calendar: starts on a Thursday, a common year.
• 2006 calendar: starts on a Sunday, a common year.
• 2011 calendar: starts on a Saturday, a common year.
• 2023 calendar: starts on a Sunday, a common year.

For a single date, the day of the week calculator gives its weekday and day of the year; for the dates of a numbered week, the week number calculator; and for the holidays of a year as a list, the US federal holidays tool.