28x is a regular, lunar-aligned calendar system for the age of intelligent systems.
A temporal standard that combines the regularity of fixed cycles with the natural rhythm of lunar months: 13 × 28 days + 1 intercalary day out of time. Year 0000 begins at the Spring equinox of 2026.
The Standard
Read the complete 28x Time Standard v0.1: specification, epoch, cycle structure, and formal definitions.
Read the standard →Why Now
Temporal integrity in the age of intelligent systems: why a new time standard matters now.
Read essay →Time Literacy
Why education must teach rhythm before schedules: a case for temporal literacy.
Read essay →Governance
Stewardship, versioning, and openness: how the 28x standard is maintained and evolved.
Learn more →Key Properties
Regular
Fixed 28-day months with predictable structure across all cycles.
Lunar-Aligned
Aligned with the natural rhythm of approximately 29.5-day lunar months.
Fixed Epoch
Gregorian 2026-03-20 (UTC) = 28X-0000-01-01. Year 0000 is the first 28x year.