Is the American Astronomical Society 230 years old?
The first meeting of the AAS was held in September 1899 in Williams Bay, Wisconsin. The meetings were held once a year initially. The frequency varied somewhat for the next 60 or so years. The meetings appear to have settled down to twice a year about 40 years ago, one in January and another in late spring.

Source: https://aas.org/meetings/past-aas-meetings