September 11 and 12

On September 11, 1683, the Battle of Vienna began, fought by the combined forces of the Holy Roman Empire of the German Nation and the Polish–Lithuanian Commonwealth against the Ottomans, who were besieging Vienna. King Jan Sobieski of Poland-Lithuania led the battle, placing his kingdom under the protection of the Black Madonna, Our Lady of Czestochowska. After the victory against the Ottomans on September 12:

. . . Pope Innocent XI extended the existing Feast of the Most Holy Name of Mary to the universal Church to thank Our Lady for the victory of John Sobieski, king of Poland, over the forces of militant Islam. . . . Pope John Paul II restored the feast of the Holy Name of Mary with the publication of the Third Typical Edition of the Roman Missal in 2002, one year after the attacks of September 11th, 2001.

The memorial had been removed from the Roman Calendar by Pope Paul VI. Pope St. John Paul II also restored the Feast of the Holy Name of Jesus in 2002, celebrated on January 3.

There's a musical celebration of this victory available, with performances of "Baroque organ music from the Hapsburg Empire", The Gates of Vienna:

Performed by Robert James Stove on the splendid organ of St Patrick’s Catholic Church in the Melbourne suburb of Mentone, this recording includes works by Johann Jakob Froberger, Georg Muffat, Gérard Scronx, Jan Zach, and other composers of the seventeenth and eighteenth centuries.

Its title refers to the 1683 Siege of Vienna, where combined Austrian and Polish forces routed the invading Ottoman army. This victory is also commemorated by the engraving on the CD’s cover.

Some of the works in this collection have not only never been released on CD before, they have never been recorded at all. The Gates of Vienna is captured in admirably vivid sound that conveys the opulence, powerful bass notes and piercing reeds of ‘the King of Instruments’. It serves as a fascinating guide to one of the richest and most enjoyable periods of music history.