About AcrossKit

What it does

• Country pages for mainland China, Russia, Vietnam, Hong Kong, Taiwan, the United States, the United Kingdom, Japan and Singapore. Each has a calculator that tells you whether a date is a working day, counts the working days between two dates and adds or subtracts working days, with a full-year calendar.
• A team overlap tool that compares up to five of these places and finds the days everyone works and the hours everyone is at work across time zones and clock changes.
• Guides that explain the rules behind the calendars, such as how makeup workdays work or how many working days a month has. Every worked example in them is computed from the same data as the calculators.

Who it is for

Anyone who depends on people in another country: planning a meeting, a delivery, an invoice due date or a project milestone around holidays that are not your own, or checking whether a colleague abroad will be at work tomorrow.

Why these countries first

Most holiday lists only show days off. In mainland China, Russia and Vietnam the government also turns some weekends into working days, and many general holiday lists don't mark those days. From abroad they are easy to miss, so they come first. Hong Kong and Taiwan follow because they are often compared with mainland China. The United States, the United Kingdom, Japan and Singapore were added next, so they can be compared with all of them.

How it is made

• Dates come only from official government sources, and each year links to the document it was taken from, with the date it was last checked.
• Automated tests check every year for impossible data and compare it with the official notice; the methodology page describes each check.
• Years that are not published yet are shown as not published. We don't guess them.
• The calculators run in your browser. Nothing you enter is sent anywhere.
• We don't claim first-hand experience; we describe the rules and the calendars.

What it is not

AcrossKit does not give legal, tax or payroll advice. It covers national calendars only, not regional holidays, company shutdowns or shift patterns, so a particular employer may differ.

Independence

AcrossKit is an independent project. It is not affiliated with any government or company.

Corrections and contact

Spotted a wrong date or a broken source link? Email hello@acrosskit.com. Corrections are recorded in the public change log on the methodology page.