UTC-5 is a time zone that is five hours behind Coordinated Universal Time (UTC). It is commonly used in several regions, including parts of North America and South America. During standard time, this zone includes cities like New York and Toronto. When daylight saving time is in effect, some areas switch to UTC-4, which means they move their clocks forward by one hour. This change typically occurs in the spring and reverts in the fall, allowing for longer daylight in the evenings during the warmer months.