28x is a regular, lunar-aligned calendar system for the age of intelligent systems.
An open standard for time. Year 0000 begins March 20, 2026.
28X-0000-01-01·Spring Equinox 2026The Standard
The Standard
Read the complete 28x Time Standard v0.1: specification, epoch, cycle structure, and formal definitions.
Read the standard →EssayWhy Now
Temporal integrity in the age of intelligent systems: why a new time standard matters now.
Read essay →EssayTime Literacy
Why education must teach rhythm before schedules: a case for temporal literacy.
Read essay →GovernanceGovernance
Stewardship, versioning, and openness: how the 28x standard is maintained and evolved.
Learn more →DeveloperTime API
Query the current 28x date, convert between calendars, and mint AFN coordinates. Live at api.28x.org.
Explore the API →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.
28X-0000-01-01