[mb-users] Capitalization of o'clock?

[Mike Morrison]

On Tue, 22 Apr 2008, Philip Jägenstedt wrote:
> Searching for "o'clock" all kinds of possible capitalizations are
> found. "O'Clock" just looks plain wrong to me, but what is
> Correct(tm)?
>
> Philip

http://www.merriam-webster.com/dictionary/o'clock says it is a contraction 
of "of the clock", 
and http://musicbrainz.org/doc/CapitalizationStandardEnglish says

'... (4) Capitalize contractions and slang consistent with the rules above 
to the extent that such clearly apply. For example, do not capitalize o' 
for "of", 'n' or n' for "and".'

So I would say it should be "o'Clock".

Mike