Today is the 30th of December.
Thirty, in ancient times, was the minimum age for a tribune in ancient Rome ("A man at 30 must be either a fool or a physician" - Tiberius), and was the age, according to biblical tradition, at which both Moses and Jesus began their public preaching. In more recent times, writers have expressed differing opinions of the effects of reaching the age of thirty: "For a young man, a woman of thirty has irresistible attractions." (Balzac, The Woman of Thirty, 1832).
"Thirty - the promise of a decade of loneliness, a thinning list of single men to know, a thinning briefcase of enthusiasm, thinning hair." (Scott Fitzgerald, The Great Gatsby, 1925)
Thirty is also the number of edges on an icosahedron; the number of edges on a dodecahedron; and the number of pieces of silver for which Judas betrayed Jesus Christ. …