A time zone is a region o the Yird that haes taen up the same staundart time, for ordinar cawed 'local time'. Maist adjacent time zones is preceese ae oor apairt, an by convention computes their local time as an affset frae Greenwich Mean Time (see UTC an aw).
Staundart time zones can be defined by geometrically subdividin the Yird's spheroid intae 24 lunes (wedge-shaped sections), bordered by meridians ilk ane 15° o longitude apairt. The local time in neeghbourin zones wad differ by ae oor. Houaniver, poleetical an geographical practicalities can result in irregular-shaped zones that follaes poleetical mairches or that chynges their time saisonally (like wi daylicht saufin time), as weel as bein subject tae antrin redefineetion as poleetical condeetions chynges.
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