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CalVer: Calendar Versioning

calver.org Reference Standards & specifications Software engineering Candidate
Screenshot of calver.org captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 7 calendar years, with breakout response in 2 of them.

submissions
11
submitters
10
observed span
2017–2024
peak thread · 99 comments
194 pts
latest 20+ return · 2020-01-06
194 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

This comes crashing down in a nice mudslide the exact moment you start maintaining an older stable release for fixes while also progressing on a newer version. If anything, date codes are useful as later version number component, e.g. 4.1.0.191220. Also, the "When to use" section is getting things quite wrong: Does your project feature a large or constantly-changing scope? Large systems and frameworks, like Ubuntu and Twisted. Amorphous sets of utilities, like Boltons. Wrong question - relevant is: "is…

eqvinox·194-point thread·

I was interested to see a more formal definition of calendar versioning than I've come across before, until I saw that it refers to `DD` for short day while `0D` is zero padded - which goes against all date formatting specifications ever... `DD` should be zero-padded and a single `D` unpadded...

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
320

reference only — not used in Hall rules or ranking

Total comments
142

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2017-06-11Calendar VersioningLVB10
2018-05-08CalVer: Versioning based on calendar dates instead of arbitrary numberszaiste20
2018-05-20CalVer: Calendar Versioningadamnemecek10
2018-06-10Calendar VersioningFirst breakoutdmoreno10843
2020-01-06CalVer: Calendar VersioningBest thread · Latest 20+ point returntosh19499
2021-05-02CalVertosh20
2021-08-12Calendar Versioningquickthrower240
2022-10-20Calendar Versioning – CalVeralwillis10
2023-03-17Calendar Versioningmooreds10
2024-02-26Calendar Versioningsaikatsg30
2024-06-04CalVer: Timely Project Versioningalexzeitler30