Glassyear
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Tool

Project workspace

Lay your project dates over the public holidays of up to 10 places. See lost working days, deadline risks and long weekends before they surprise you. Projects are saved in this browser only — nothing is sent to us.

Tip: type a country name or code (us, de-by, in…) and press Enter.

Enterprise holiday API

Every country, region and year as JSON, with change alerts — built for HR, payroll and scheduling platforms. Not open yet: leave a work email and we will write when the first keys are ready. Nothing is charged before then.

The free public API stays free: /api.