Why a shared calendar isn't enough

Most scheduling tools know attendees' meetings, not their countries. They'll happily book a Friday review with Cairo (weekend there), a Sunday kickoff with Tel Aviv (working day there, weekend for everyone else), or a quarter-end deadline on a substitute holiday. This planner works from official public-holiday data and each country's legal rest days, so the windows it returns are clear for every office — before you even open the calendar.