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Date & Time blog
Age, duration, time zones · 2 posts
datetimeOverview
5 date & time calculators for everything calendars get wrong
Age, date difference, date arithmetic, working days, and time zones — the date calculations a phone calendar app refuses to do.
2 min
datetimeGuide
Age calculator: precise to the day, useful beyond birthdays
Why "how old are you" is harder than it looks, how the calculator handles leap years, and the surprisingly common use cases that aren't birthdays.
2 min