site.btaObservances: April 27

The world:

- National Day of Togo. Independence Day since 1960;
- National Day of Sierra Leone. Independence Day since 1961;
- National Day of the Netherlands;
- National Day of the Republic of South Africa. Freedom Day since 1994.

On this date in Bulgarian history:

1881: Coup ousts Petko Karavelov's government and suspends Tarnovo Constitution.

1963: First electrified railway line, 156 km between Sofia and Plovdiv, is inaugurated.

2006: US Secretary of State Condoleezza Rice visits for informal NATO ministerial (April 27-28). Bulgaria-US Defence Cooperation Agreement is signed.