International Day Calendar 2025 Uk. This page contains a calendar of all 2025 observances instituted by the united nations and its agencies, and recognised in countries across the world. Chose a month to view an observance and holiday calendar for that month in 2025.

The most comprehensive calendar of awareness events from the uk, us and across the world. With that in mind, we have put together an extensive awareness days calendar for 2025, covering the most important days, months, and weeks of the year ahead.