The Social Season
The Social Season was that time of year when society's "upper crust" held balls, reception, dinner parties, and charity and sporting events.
The annual time period differed, however, between cities. In Paris, for example, there were two two parts to the season: from December until Easter and then from April to mid-June (called the Grande Saison). In New York, the Astor 400 had a winter season that began in mid-November and concluded at Lent. Most big cities in the United States followed New York's lead. And in London, the season began after Easter and went through August.