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-as of [12 APRIL 2024]–
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-“greenwich mean time” (GMT) is the ‘mean solar time’ at the ‘Royal Observatory’ in ‘greenwich’ (/ ‘london’)-
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(‘GMT’ was formerly used as the ‘international civil time standard’, now superseded in that function by ‘Coordinated Universal Time’ (UTC))
(today GMT is considered equivalent to UTC for UK ‘civil’ purposes (but this is not formalised) and for ‘navigation’ is considered equivalent to UT1 (the modern form of mean solar time at 0° longitude);
these 2 meanings can differ by up to 0.9 s)
(consequently, the term ‘GMT’ should not be used for precise purposes)
(due to Earth’s uneven speed in its ‘elliptical orbit’ and its ‘axial tilt’, ‘noon’ (12:00:00) GMT is rarely the exact moment the sun crosses the ‘Greenwich meridian’ and reaches its highest point in the sky there)
(this event may occur up to 16 minutes before or after noon GMT, a discrepancy calculated by the equation of time)
(noon ‘GMT’ is the annual average (i.e. “mean”) moment of this event, which accounts for the word “mean” in “Greenwich Mean Time”)
(originally, ‘astronomers’ considered a ‘GMT day’ to start at ‘noon’ while for almost everyone else it started at ‘midnight’)
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(it SHOULD start at noon!)
(just like a year should start on either a ‘solstice’ or equinox’)
(first get winter out of the way!)
(i like the winter –> spring –? summer —> fall cycles)
(not the fall –> winter)
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(to avoid confusion, the name ‘Universal Time’ was introduced to denote ‘GMT’ as counted from ‘midnight’)
(‘astronomers’ preferred the old convention to simplify their observational data, so that each night was logged under a single calendar date)
(‘today ‘Universal Time’ usually refers to ‘UTC’ or ‘UT1’)
(the term “GMT” is especially used by bodies connected with the ‘United Kingdom’, such as the ‘BBC World Service’, the ‘Royal Navy’, the ‘Met Office’ and others particularly in Arab countries, such as the ‘Middle East Broadcasting Centre’ and ‘OSN’)
(it is a term commonly used in the ‘United Kingdom’ and countries of the ‘Commonwealth’, including ‘Australia’, ‘New Zealand’, ‘South Africa’, ‘India’, ‘Pakistan’, and ‘Malaysia’; and in many other countries of the ‘eastern hemisphere’)
(in some countries (‘Britain’ for example) ‘Greenwich Mean Time’ is the legal time in the winter and the population uses the term)
(see “GMT in legislation”)
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥