WhatNextHoliday.com is an online resource for finding and planning around public holidays worldwide. Its calendar covers 206 countries and territories, helping visitors quickly see each location’s next public holiday, its date, and the wider holiday schedule. Users can browse by country or region, search for countries and holidays, and compare upcoming dates across destinations. The site also highlights holidays happening today or soon, public holidays during the current week, and upcoming long weekends—defined as three or more consecutive days off around a public holiday, based on each country’s weekend.

For practical planning, WhatNextHoliday.com offers free browser-based tools. The trip checker identifies public holidays that fall during travel dates and flags where closures may occur. The leave planner helps users explore how to combine leave days with public holidays to create longer breaks. A country comparison tool lets visitors place up to four countries side by side and check which holidays coincide. The site states that information entered into these tools stays on the user’s device.