Chronos Vault
Comparative Explorer of 11 Historical and Reform Calendar Systems
Administrative Reform
International Fixed Calendar (Cotsworth Plan)
13 Months / 28 Days
Core Structure & Design
A 13-month administrative reform proposal featuring exactly 28 days per month. Every month begins on a Sunday and ends on a Saturday, creating perpetual weekly consistency.
Historical & Functional Context
Proposed in 1902 by Moses B. Cotsworth to resolve Gregorian irregularities. It was famously utilized internally for business operations by the Eastman Kodak Company from 1928 to 1989.
Base Cycle Length
364 Days + Year Day
Intercalation Method
Unassigned Year Day / Leap Day