United Nations Day, on 24th October, marks the entry into force of the UN Charter in 1945.
"UN Day 2012 is an opportunity for us to celebrate the UN's achievements, reflect on the challenges it faces and show our support for this indispensable organisation. Only by doing so can we encourage our governments to work together for a strong, credible and effective United Nations." http://una.org.uk/UN-day-2012
The UNA UK has released a poster series to support UN day 24th October. Posters are available at