Time

Dates and calendar

Compare dates, calculate ages and navigate calendar intervals precisely.

Calculate an exact age between two dates.

Count days and weeks between any two dates.

Add or subtract days, weeks, months or years from any calendar date.

Count business days between two dates with configurable weekends and holidays.

Add calendar, business or working days to calculate a due date.

Find the ISO week number and week-based year for any date.

Find which weekday corresponds to any valid calendar date.

Count the days remaining from today until a chosen date.

Check whether a Gregorian calendar year contains 365 or 366 days.

Compare dates, calculate ages and navigate calendar intervals precisely.

Calendar calculations depend on whether you count calendar days, working days or complete weeks. Naming that rule prevents most date mistakes.

Review the start and end dates, inclusion rule and local holidays before using a result for an administrative or contractual deadline.