September 8-13, 2014, there will be a meeting in Cortona which revolves around numerical semigroups. The meeting intends to gather together people working on numerical semigroups, coming from different areas such as Factorization Theory, Algebraic Geometry, Combinatorics, Commutative Algebra, Coding Theory, Number Theory, and Semigroup Theory.
For more information see the website for the meeting.