Global time standards are systems used to coordinate time across different regions of the world. The most widely recognized standard is Coordinated Universal Time (UTC), which serves as the basis for timekeeping worldwide. UTC is not affected by daylight saving time and is used to synchronize clocks and schedules in various fields, including aviation, telecommunications, and computing. To manage time zones, the world is divided into regions, each typically one hour apart from UTC. These time zones are often expressed as UTC plus or minus a certain number of hours, such as Eastern Standard Time (EST), which is UTC-5. This system helps people coordinate activities and communicate effectively across different locations.