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Greenwich Mean Time: UTC±00: GST: South Georgia and the South Sandwich Islands Time: UTC−02: GST: Gulf Standard Time: UTC+04: GYT: Guyana Time: UTC−04: HDT: Hawaii–Aleutian Daylight Time: UTC−09: HAEC: Heure Avancée d'Europe Centrale French-language name for CEST UTC+02: HST: Hawaii–Aleutian Standard Time: UTC−10: HKT: Hong Kong ...
Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communication, navigation, scientific research, and commerce. UTC has been widely embraced by most countries and ...
UTC−08:00 (Zone 4 or Northwest Zone) – State of Baja California. UTC−07:00 (Zone 3 or Pacific Zone) – States of Baja California Sur, Chihuahua, Nayarit, Sinaloa and Sonora. UTC−06:00 (Zone 2 or Central Zone) – Most of Mexico. UTC−05:00 (Zone 1 or Southeast Zone) – State of Quintana Roo. Time in Mexico. Chile.
Greenwich Mean Time is defined in law as standard time in the following countries and areas, which also advance their clocks one hour (GMT+1) in summer. United Kingdom, where the summer time is called British Summer Time (BST) Ireland, where it is called Winter Time, [22] changing to Standard Time in summer.
Hour angle. The hour angle is indicated by an orange arrow on the celestial equator plane. The arrow ends at the hour circle of an orange dot indicating the apparent place of an astronomical object on the celestial sphere. In astronomy and celestial navigation, the hour angle is the dihedral angle between the meridian plane (containing Earth's ...
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone. The military time zone system ensures clear ...
Time in the United Arab Emirates. United Arab Emirates Standard Time or UAE Standard Time is the time zone for the UAE. It is given by Gulf Standard Time, being 4 hours ahead of GMT / UTC (UTC+04:00) and is co-linear with neighbouring Oman. The UAE does not change clocks for daylight saving time. [1]