Site updates

Site updates.

A dated record of what changed on Age in Days. Corrections to calculation behavior are listed here with the date they were fixed.

Last updated: October 2026 · Age in Days

October 30, 2026

New on the homepage: your life in weeks. A 90-year calendar fills in every week you have lived from your birth date, marks this week, and shows the dates of any week you point at.

Working-days mode can now remove US federal holidays or UK bank holidays (England and Wales) for any range from 1978 to 2099. The result names each holiday it removed.
New US federal holiday and UK bank holiday pages with observed dates and working days per month to 2030.
A Copy link button shares a result. The dates travel after the # in the link, which is never sent to the server.
Guides rewritten and merged. Pages that covered the same question, such as four separate pages about leap years, are now one page each. Old addresses redirect to the new pages.
The milestones page adds a table of how the calendar age at each milestone varies across every birth date from 1900 to 2025.
All reference tables are now generated from the calculator's own date code, so a table cannot disagree with the calculator.

Results update as you type, and the calculator moved to the top of the homepage.
February 29 birthdays show the March 1 reading next to the February 28 result whenever the two differ.
Fixed: ages measured to a month end could show a negative day count. Years 1 to 99 now calculate correctly.
Fixed: countdown and next-birthday results now refresh after local midnight in a tab left open.
Accessibility fixes from an automated and manual audit: landmark structure, button labels, and a single settled announcement for screen readers.
New design and logo. Light mode by default, with a dark theme option.

Fixed: impossible dates such as February 29, 2026 or April 31 were silently moved to the next valid date. They are now rejected.
Added the next-birthday and day-milestone modes and the printable milestone calendar.
Published the methodology with every counting rule, backed by automated tests for leap centuries, month ends, and daylight saving spans.

April 4, 2026: Age in Days launched with age, date span, countdown, and weekday modes.
April to May 2026: first guides and worked examples, and the policy pages.