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

Definition [ eedit | eedit soorce ]

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 [ eedit | eedit soorce ]

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 ?ρα "saison, time o day, oor". Mids Inglis ure , Anglo-French houre replaced Auld Inglis tid (that survives as Modren Inglis tide ) an stund ( Auld Heich German stunta , frae a Germanic *stund? "time, interval, while").

Greek ?ρα is cognate tae Inglis year , baith frae a PIE *i??ro- "year, simmer".

Wikimedia Commons haes media relatit tae Hour .