The World Calendar is a proposed 12-month, perennial calendar arrangement designed to improve consistency and simplify timekeeping by ensuring every year follows the same pattern. This calendar system divides the year into four equal quarters of 91 days each, where each quarter is made up of one 31-day month followed by two 30-day months, with the extra day of the year as a year-end holiday not belonging to any month or week.

World Calendar

12-month calendar

perennial calendar arrangement

Timekeeping is the practice of measuring, recording, and managing time, crucial for coordinating activities and ensuring synchronization across various domains. It has evolved from ancient methods like sundials to modern atomic clocks, reflecting technological advancements and the increasing precision required in scientific and daily applications.

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