ISO-8601 Week Date & Global Public Holiday Calendar
The ISO week date system is widely used in corporate and commercial environments to accurately track project timelines, financial quarters, and logistical planning. According to the ISO-8601 standard, weeks start on Monday. The first week of the year (Week 1) is defined as the week that contains the first Thursday of the year.
Our tool automatically detects your region to provide an accurate representation of local public holidays overlaid on the standard monthly calendar. Whether you are scheduling a business meeting or planning a vacation, knowing the current week number is essential for seamless global communication.