28th November

On this day in 1660, a meeting of twelve scientists in Gresham College, including Boyle, Brouncker, Neile, Wilkins and Wren, constituted their Society for the Promoting of Physico-Mathematical Experimental Learning which they declared would promote experimental philosophy. This later became the Royal Society of London.
See THIS LINK.

The postage stamp of one of today's mathematicians at THIS LINK was issued in 1967.