site.btaObservances: October 31

The world:

- World Savings Day. 

- Halloween. Festival, very popular in the US, Britain and Ireland. Pope Boniface IV establishes anniversary dedicated to Virgin Mary and martyrs in 853;

- International Black Sea Day.

On this date in Bulgarian history:

1915: Diplomatic relations established with Switzerland.

1930: King Boris III weds Princess Giovanna of Savoy in Eastern Orthodox ceremony at Sofia's St Alexander Nevsky Memorial Cathedral.

1964: Diplomatic relations with Norway, established in 1918, are upgraded to embassy level.

1996: In Istanbul, environment ministers of Bulgaria, Georgia, Romania, Russia, Turkiye and Ukraine sign strategic action plan for Black Sea protection.