site.btaToday's Observances: March 23
- World Meteorological Day;
- National Day of Pakistan: Republic Day (1956).
On this date in Bulgarian history:
1923: Bulgaria and the Kingdom of Serbs, Croats and Slovenes sign Nis Agreement on Joint Border Protection.
1989: Official opening of the 1,000-megawatt Unit 5 of the Kozloduy Nuclear Power Plant. The generator is switched on the national power grid on November 29, 1988.
1990: Diplomatic relations established with the Republic of Korea.
1996: Construction of Maritza East 2 Thermal Power Plant is completed with the opening of 215 MW Unit 8.
2006: The National Assembly adopts a Geodezy and Cartography Act.
2006: An Anti-Organized Crime and Corruption Department is set up with the Supreme Cassation Prosecution Office.
2006: The Ukrainian Chamber of Commerce and Industry unveils its first Bulgarian-based office in Varna.