Oor (time)

The oor (seembol: h) is a unit o time. It isna an SI unit but is acceptit for uise wi the SI.

 Definition 
In modren uissage, an oor is a unit o time 60 meenits, or 3,600 seiconts in lenth. It is 1/24 o a median Yird day.

An oor on the UTC time scale can include a negative or positive lowp seicont, an can syne hae a lenth o 3,599 or 3,601 seiconts an aw.

 Etymology 

Mids Inglis ure first appears in the 13t century, as a loanwird frae Auld French ure, ore, frae the Laitin hora, at the hinder end frae Greek  "saison, time o day, oor". Mids Inglis ure, Anglo-French houre 
replaced Auld Inglis tíd (that survives as Modren Inglis tide) an stund (Auld Heich German stunta, frae a Germanic *stundō "time, interval, while").

Greek  is cognate tae Inglis year, baith frae a PIE  "year, simmer".

Category:Orders o magnitude (time)
Category:Units o time