Pentecost is one of the major religious holidays in Western Christianity. It always falls on the 50th day after Easter, commemorating the descent of the Holy Spirit upon the Apostles.
International AIDS Candlelight Memorial is an annual campaign held on the third Sunday in May. It is coordinated by GNP+ – Global Network of People Living with HIV.
The Day of Remembrance for the Victims of Political Repressions in Ukraine is observed on the third Sunday in May every year. It was officially established in 2007 by President Viktor Yuschenko.
Each year International Day of Conscientious Objector is marked around the world on May 15. This observance raises awareness of people, who refuse to participate in armed conflicts.
International Day of Families is annually observed on May 15. This holiday was proclaimed by the UN General Assembly in 1993. The first observation took place on May 15, 1994.