Akademik

half past two
half past one/two/etc phrase
30 minutes after one o’clock two o’clock etc

The shops close at half past five.

Usage note
In spoken British English people often say ‘half one’, ‘half two’ etc, which has the same meaning as ‘half past one’, ‘half past two’ etc:

Shall we meet about half four?

(=4.30 pm)

Thesaurus: telling the time by a clockhyponym
Main entry: half

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half past ˈone, ˈtwo, etc. idiom
(US also half after ˈone, ˈtwo, etc.) (also BrE informal half ˈone, ˈtwo, etc.) 30 minutes after any hour on the clock
Main entry: ↑halfidiom

Useful english dictionary. 2012.