Calendar & money

Date formats, holidays, VAT rates, tipping customs, retirement ages and IBAN lengths.

• Date formats by country (DMY / MDY / YMD) Which countries write dates day-month-year, month-day-year or year-month-day — with examples, so forms, code and bookings never mix up the month and the day.
• Which countries use the euro Every country using the euro: the 20 eurozone members with adoption years, microstates with agreements, and unilateral users like Kosovo and Montenegro.
• Retirement ages around the world State pension ages in 20 countries — from 62 in China's phased reform to 67 in Germany and the US — with notes on current reforms and male/female differences.
• US federal holidays with 2026 dates All 11 US federal holidays with their date rules and the exact 2026 dates — plan closures, payroll and shipping around days federal offices are closed.
• VAT / GST rates by country Standard VAT rates for 25 countries: EU rates from 17% to 27%, GST in Australia and Singapore, Japan's consumption tax — check the sales tax you pay abroad.