Keep the week.
Seven continuous weekday positions, so calendars can coordinate across different worlds.
The week does not break ↗Enter a word or phrase from the book.
THE OPERATING ARCHITECTURE OF TIME
A calendar is infrastructure. Solarian proposes a coherent way to organise civil time across planets, moons, asteroids and artificial worlds—without giving up the human rhythm of the week.
SOLARIAN: AN OPERATING CALENDAR FOR EVERY PLANET · JB BULLOCK
THE COMPLETE PUBLIC WEB EDITION · OCTOBER 2026THE CENTRAL IDEA
Our current calendar grew up on one planet. Solarian asks what it would look like if humanity designed an operating calendar with the entire Solar System in mind.
Its answer is not a single planetary year imposed everywhere. It is a shared language of weeks, minths, mears and locally meaningful orbital calendars.
The Solarian calendar on one page ↗THE SYSTEM AT A GLANCE

Week alignment, human cadence and astronomical time, presented as one operating architecture.
Read the explanation ↗THREE DESIGN PRINCIPLES
Seven continuous weekday positions, so calendars can coordinate across different worlds.
The week does not break ↗Four-week minths and twelve-minth mears provide a human-scale working cadence.
The calendar for people ↗Local astronomical years follow physical planetary motion, with controlled expansion joints.
Astronomy in the real world ↗READ / INVESTIGATE / BUILD
Twenty-five chapters and seven appendices, presented as an accessible browser edition.
Open the reading room ↗02 — THE STANDARDUnderstand the separate, openly licensed technical architecture and current certification gates.
Review the protocol status ↗03 — THE EVIDENCELearn what has been tested, what remains provisional and how results are versioned.
Review the evidence ↗FROM THE AUTHOR
Solarian is written for the people who will make multi-world life ordinary: builders, operators, scientists, settlers and anyone interested in the infrastructure that makes a civilisation possible.
Start reading ↗