Our Calendar Methodology
We combine deterministic date calculation engines with primary legal source verification to maintain high data integrity.
Date Calculation Engine
Our baseline holiday dates are computed using standardized holiday definition datasets including date-holidays, capturing fixed dates, lunar calculations, and astronomical equinox rules.
Each calculation accounts for regional weekend substitute rules, in-lieu-of observances, and multi-day statutory holiday periods.
Primary Source Verification
Calculated occurrences are audited against official government legislation, parliamentary gazettes, and national ministries of labor.
When discrepancies arise between open datasets and official government decrees, our source correction registry applies authoritative overrides.