"at one o'clock" / "at 1 oclock"

usingenglish

Senior Member
Spain,spanish
Hello.

What is the correct form?

- "at one (two, etc) o'clock"
- "at 1 (2, 3, etc) oclock"

I would be grateful for your help.
 
  • entangledbank

    Senior Member
    English - South-East England
    The apostrophe must be used: o'clock, not oclock. Whether you use a word 'one' or a figure '1' is your choice. It's not very important, but books would normally use the word.
     

    natkretep

    Moderato con anima (English Only)
    English (Singapore/UK), basic Chinese
    Yes, the apostrophe there indicates that something has been elided (left out): o' clock is derived from of the clock. You also see this in will o' the wisp, jack o' lantern. You might notice that I put a space after the apostrophe - I am in the minority though.
     

    Lis48

    Senior Member
    English - British
    It is normally considered better English to write small numbers (up to ten) in full so I would always write one o´clock rather than 1 o´clock in any formal writing.
    When it comes to bigger numbers though e.g.11/12 o´clock, you would usually use the number.
     
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