Alka
Overview
 
The Sinjska alka siɲska al̩ka is a knight
Knight
A knight was a member of a class of lower nobility in the High Middle Ages.By the Late Middle Ages, the rank had become associated with the ideals of chivalry, a code of conduct for the perfect courtly Christian warrior....

 tournament
Tournament
A tournament is a competition involving a relatively large number of competitors, all participating in a sport or game. More specifically, the term may be used in either of two overlapping senses:...

 which has been held every first Sunday
Sunday
Sunday is the day of the week between Saturday and Monday. For most Christians, Sunday is observed as a day for worship of God and rest, due to the belief that it is Lord's Day, the day of Christ's resurrection....

 in the month of August
August
August is the eighth month of the year in the Julian and Gregorian Calendars and one of seven months with a length of 31 days.This month was originally named Sextilis in Latin, because it was the sixth month in the original ten-month Roman calendar under Romulus in 753 BC, when March was the first...

 in town
Town
A town is a human settlement larger than a village but smaller than a city. The size a settlement must be in order to be called a "town" varies considerably in different parts of the world, so that, for example, many American "small towns" seem to British people to be no more than villages, while...

 of Sinj
Sinj
Sinj is a town in the continental part of Split-Dalmatia County, Croatia. The town itself has a population of 11,448, while the population of the administrative municipality which includes surrounding villages is 24,832 ....

, Croatia
Croatia
Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ...

 since 1715, commemorating the victory over Ottoman Turkish
Ottoman Empire
The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...

 administration. It consists of an equestrian competition, in which various horsemen attempt to aim their lances at a hanging metal ring (alka) at full gallop.
Alka is also the name of the object used in the tournament; it is made of two concentric
Concentric
Concentric objects share the same center, axis or origin with one inside the other. Circles, tubes, cylindrical shafts, disks, and spheres may be concentric to one another...

 rings (diameter of inner being 35.1 mm, and 131.7 mm of outer one) connected with three bars 120° apart.
 
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