👉 UTC, or Coordinated Universal Time, is a global time standard that serves as the foundation for all other time zones. It is defined by the International Earth Rotation and Reference Systems Service (IERS) and is based on the Earth's rotation, ensuring consistency across different regions. UTC is not a physical time but a reference point that accounts for the Earth's irregular rotation, including its daily rotation on its axis and its orbit around the Sun. This time standard is crucial for synchronization in scientific, technological, and everyday applications worldwide, as it provides a uniform time frame that minimizes discrepancies caused by local time zones and daylight saving adjustments. UTC is typically represented as UTC+00:00, with each time zone offset relative to UTC by one hour.
