1e480021_iness___Local_Search___Part_15__Additional_details
[Date/Area Affected / Issue] 01/06/12 Places Dashboard: Hours do not support 24 hr businesses [Reference URL] Blumenthal’s Blog Comment [Additional details] 
Email from Google Support: “The underlying issue is that the system is not taking 12am-12am as valid operating hours” and “After speaking with our technical team members, your hours may or may not be listed as 12am to 12am after the next index push. There is the option not to display hours, which may be better suited for a 24 hours business, such as yourself.” Comment by Helmut: its a matter of the gl & hl-Parameters I believe. For German listings Place supports 24 hour format.
Google Places (Maps & Local) | Understanding Google My Business & Local Search - Part 15
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