site.btaToday's Observances: September 16
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![Today's Observances: September 16](/upload/194460/C30C4BF5-B4BB-4734-AC51-64666BACBC50.jpg?l=1000&original=)
The world:
- International Day for the Preservation of the Ozone Layer;
- International Coastal Cleanup Day;
- National Day of Mexico: Declaration of Independence (from Spain, 1810);
- National Day of Papua New Guinea: Independence Day (from Australia, 1975).
On this date in Bulgarian history:
1872: Ecumenical Patriarchate declares Bulgarian Exarchate schismatic.
1907: St George the Victorious Chapel Mausoleum is unveiled in Pleven (North Central Bulgaria) in memory of the Russian and Romanian soldiers fallen in Siege of Pleven during Russo-Turkish War of Liberation (1877-1878).
1913: Treaty of Constantinople signed with Turkey after Bulgaria's defeat in Second Balkan War (1913).
1937: Area near Village of Vrazhdebna (northeast of city centre) chosen as construction site for Sofia Airport.
1946: Queen Mother Ioanna and her children, King Simeon II and Princess Marie-Louise, are exiled from Bulgaria after abolition of monarchy and proclamation of People's Republic.
1947: Navigation Maritime Bulgare established with head office in Varna.
2003: Protection against Discrimination Act adopted.
/KK/
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