All official holidays in Finland are established by acts of Parliament.

This national holiday was established to commemorate the end of the Khmer Rouge regime in 1979.

It remains unclear which holiday was established first.

One of these we imported, enslaved and later emancipated, which now has a hero for whom a national holiday has been established.

The holiday was first established in 1948, to be held every year on January 15.

The holiday was established in the Soviet Union one year later, on April 9, 1962.

The Russian national holiday, Unity Day, was established due to this conflict.

The holiday was established in 2010 and its first observance was in 2011.

The holiday was officially established in 1992.

The public holiday was established at the request of a "group of churches", which had approached Abal with the idea shortly before he lost office.