Lunar Society of Birmingham
The Lunar Society of Birmingham was a British dinner club and informal learned society of prominent figures in the Midlands Enlightenment, including industrialists, natural philosophers and intellectuals, who met regularly between 1765 and 1813 in Birmingham. At first called the Lunar Circle, "Lunar Society" became the formal name by 1775.
Source: Wikipedia — Lunar Society of Birmingham (CC BY-SA 4.0)