site.btaObservances: February 14

Bulgaria:

- Vine-growers' Day;

- Bulgarian Archaeologists' Day.

- Demise of St Constantine Cyril the Philosopher, inventor of the Slavic alphabet.

The world:

- St Valentine's Day.

On this date in Bulgarian history:

1941: Sofia's first trolley bus service is launched.

1994: Bulgaria formally joins NATO's Partnership for Peace initiative.

1997: Multifunctional building of Bulgaria's Antarctic Base opens on Livingston Island.

2001: Flag-carrier Balkan Airlines stops operating.

2008: Diplomatic relations are established with Monaco at embassy level.