UnifiedCalendar.org
One Timestamp. Seven Civilizations. Sync via Astrophysics.
UnifiedCalendar.org とは？
The Unified Calendar Protocol (UCP) is an open-standard engine designed to solve the "Intercalation Drift" problem in global timekeeping. Most date converters use simple math that drifts over time. UCP uses pure geocentric astrophysics and a geocentric UTC lock to synchronize seven major world calendars to the exact same astronomical moment. Whether you are building international HR platforms, global fintech apps, or cultural research tools, UCP provides a single, unambiguous source of truth.
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