May/June

Listed below are the days and weeks officially recognised by the United Nations:

•17 May - World Telecommunication and Information Society Day (ITU)

•21 May - World Day for Cultural Diversity for Dialogue and Development (UNESCO)

•22 May - International Day for Biological Diversity

•25 May - Africa Day

•31 May - World No-Tobacco Day (WHO)

•4 June - International Day of Innocent Children Victims of Aggression (in French)

•5 June - World Environment Day (UNEP)

Source: http://portal.unesco.org/en/ev.php-URL_ID=7588&URL_DO=DO_TOPIC&URL_SECTION=201.html