International Business Day Planner

Count, add, or find the next business day shared by two countries using existing weekend and public-holiday data.

When two teams or counterparties need shared working days across borders — not legal advice.

Counts shared business days, adds N common business days, or finds the next common business day for two countries. Weekends follow the existing holiday planner model; public holidays come only from date-holidays. Definitions vary by contract, industry, and organization — this is an estimate, not legal advice.

Business-day estimate excluding weekends and public holidays. Not a legal determination of business closure.

公的祝日と週末を除く営業日目安です。法的な休業判定ではありません。

Countries come from the existing holiday planner catalog (date-holidays). Not every territory is covered; missing holiday data means weekends-only for that country — holidays are never invented.