Glossary
Travel & Geography
UTC/GMT/Zulu Time
Definition
Coordinated Universal Time (UTC), the primary time standard used in aviation worldwide. Also known as Greenwich Mean Time (GMT) or Zulu time (indicated by 'Z' suffix).
Related Terms
Time Zone
A region of the globe that observes a uniform standard time. The world is divided into 24 primary time zones, each offset from UTC by whole or half hours.
Jet Lag
A temporary sleep disorder caused by traveling across multiple time zones, disrupting the body's circadian rhythm. Symptoms include fatigue, insomnia, and difficulty concentrating.
Flight Plan
A document filed with air traffic control that specifies the planned route, altitude, speed, and other details of a flight. Required for all IFR flights and recommended for VFR flights.