---
id: your-version-number
title: Your Version Number
summary: A website that writes your age as a software version, decades.years.days, with a Work Edition for job tenure.
collection: Personal tools and making
status: active
url: https://yourversionnumber.com/
started: 2026-05-03
topics:
  - play
sources:
  - kind: github
    repository: jthingelstad/yourversionnumber.com
    role: implementation
  - kind: website
    url: https://yourversionnumber.com/
    role: website
    sitemap: https://yourversionnumber.com/sitemap.xml
  - kind: website
    url: https://www.thingelstad.com/2018/02/24/your-version-number.html
    role: reference
  - kind: website
    url: https://www.thingelstad.com/2026/05/06/your-version-number-the-website.html
    role: reference
connections:
  - to: release-notes
    label: grew into
    detail: Release Notes uses Your Version Number’s birthday arithmetic in a daily email and personal journal.
    source: https://github.com/jthingelstad/yvn-release-notes
    kind: lineage
story:
  color: "#1763ff"
  introduction: A different way to count the days.
  engineering:
    - A framework-free static site calculates its numbers in the browser.
    - Dates, people, themes, and signed cards travel in the URL, making a view shareable without an account.
    - The related Release Notes product adds daily email and a personal journal. It has its own server and storage.
  stack:
    - JavaScript
    - CSS
    - Static web
    - URL state
  related:
    - release-notes
    - mb
  questions:
    - How does the version number work?
    - How is Release Notes related?
  source: https://github.com/jthingelstad/yourversionnumber.com
  started: The idea began in 2018
page: https://thingelstad.xyz/things/your-version-number/
---

# Your Version Number

A website that writes your age as a software version, decades.years.days, with a Work Edition for job tenure.

In February 2018 I wrote [Your Version Number](https://www.thingelstad.com/2018/02/24/your-version-number.html), building on a habit of my friend David Hussman, who gave his age as a version number. I mapped it to semantic versioning: decades are the major version, years into the decade the minor, and days since the last birthday the patch. I was v4.6.52 that day, and I made a Workflow script to show the versions of people in my address book. David died that August; the [site’s About page](https://yourversionnumber.com/about/) says the arithmetic is his.

After a year of seeing my version through a [shortcut on my phone](https://www.thingelstad.com/2025/02/25/jamie.html), I made it a website with Claude Code in May 2026, first shared in [Weekly Thing 346](https://weekly.thingelstad.com/archive/346/) on 2026-05-03 and then in [a launch post](https://www.thingelstad.com/2026/05/06/your-version-number-the-website.html). Add one or more birthdays, pick one of the themes, and the page shows each version, counting up at midnight. Everything is held in the URL, so a view can be bookmarked, set as a home page, or sent to someone, with no account. Cards with a signed note work the same way.

The Work Edition applies the same idea to a job: completed years of tenure, the quarter of the current tenure year, and weekdays into that quarter, with a build number that counts every business day, and work themes such as a board update. In October 2026 the idea grew into [Release Notes](https://notes.yourversionnumber.com/), a daily email of the day’s version with a journal attached.