Ludwig van Beethoven's Cello Sonata No. 3 in A major, Op. 69 was written in 1808, in the same year Beethoven also completed and published his Fifth and Sixth Symphonies, composed and completed in 1808, which was first performed in the Theater an der Wien on which date, in a four-hour concert?
22 December 1808
Title: Symphony No. 6 (Beethoven)
Passage: The Symphony No. 6 in F major, Op. 68, also known as the Pastoral Symphony (German: "Pastorale"), is a symphony composed by Ludwig van Beethoven, and completed in 1808.  One of Beethoven's few works containing explicitly programmatic content, the symphony was first performed in the Theater an der Wien on 22 December 1808 in a four-hour concert.
Title: Cello Sonata No. 3 (Beethoven)
Passage: Ludwig van Beethoven's Cello Sonata No. 3 in A major, Op.  69 was written in 1808, Beethoven's second compositional period.  Composed in the same year were the two piano trios of Op. 70 and the Choral Fantasy; in the same year Beethoven also completed and published his Fifth and Sixth Symphonies.  The sonata was dedicated to Baron Ignaz von Gleichenstein and first performed in March 1809 by cellist Nikolaus Kraft and pianist Dorothea von Ertmann.  Beethoven composed five sonatas for cello and piano over his lifetime; Steven Isserlis described his third sonata as the first cello sonata in history to give equally important parts to both of the instruments.
Title: Piano Sonata No. 3 (Beethoven)
Passage: Ludwig van Beethoven's Piano Sonata No. 3 in C major, Op. 2, No. 3, is a sonata written for solo piano, composed in 1795.  It is dedicated to Joseph Haydn and is often referred to as Beethoven's first virtuosic piano sonata.  The three Opus 2 sonatas all contain four movements each, an unusual length which seems to show that Beethoven was aspiring towards composing a symphony.  It is both the weightiest and longest of the three Opus 2 sonatas, lasting over 25 minutes, presenting many difficulties, including difficult trills, awkward hand movements, and forearm rotation.  It is Beethoven's second longest piano sonata in his early period, only to Beethoven's Grand Sonata in E-flat Major, Op. 7, published a year later.
Cello Sonata No. 3 (Beethoven) Symphony No. 6 (Beethoven)