Why is Hamilton thought of as the "18 hour city"?

The ’18-hour city’ is a burgeoning secondary real estate market. Where NYC, London, Tokyo, and now Toronto, are 24-hour cities, the high cost has resulted in an exodus to smaller cities, like Austin, TX, Raleigh, N.C., Nashville, TN, which have grown in vibrancy. Montreal, Vancouver and Calgary are considered 18-hour cities and will continue staking their claim as emergent centres. Previous versions of Emerging Trends in Real Estate anointed Hamilton an emerging 18-hour city, and that’s likely to continue as affordability drives people further from the Toronto core.