The wedding was finally officially celebrated on 11 January 1869.

The Pros did not officially celebrate their championship season until the following year.

On 17 December 1917 the first professors' conference was held, and this date is officially celebrated as the school's day.

The search engine officially celebrates its birthday on September 27.

As a result of Fortuyn's murder, the cup was not officially celebrated in the city center.

The city officially celebrated its 500th anniversary in 1988.

Eritrea officially celebrated its 1st anniversary of independence on May 24, 1992.

Ever since, it has proclaimed a rainbow identity and officially celebrated all people as fellow citizens.

Later it had been declared a state-level festival and is celebrated officially, each year, in the first week of November.

At the beginning of June each year the coupling of these two towns is officially celebrated.