Picture a 14-table breakfast café in Çekmeköy, Istanbul. A guest searches Google for "kahvaltıcı open near me" and the café appears in the Knowledge Panel with a green "Open now · until 23:00" badge. That badge isn't coming from Google My Business alone — it's powered by OpeningHoursSpecification schema markup.
What OpeningHoursSpecification does that GMB can't
GMB hours feed the first result card, but schema.org/OpeningHoursSpecification powers the live "open/closed" badge in the Knowledge Panel, Maps voice answers, and LLM answer engines like Perplexity that scrape JSON-LD. GMB is one surface; schema is multi-surface.
The Çekmeköy operator updated GMB for 8 weeks without earning the badge. Once OpeningHoursSpecification was added to the JSON-LD, the Knowledge Panel started showing "Open now" within 9 days, lifting click-through rate by 18%.
DayOfWeek enum and correct formatting
Day names must be the schema.org enum URL or string — https://schema.org/Monday, not "Pazartesi". Times are ISO 8601 24-hour: "07:00", not "7 am". Leading zeros required.
- dayOfWeek: ["Monday","Tuesday",...] or single string
- opens: "07:00" — ISO time format
- closes: "23:00" — wrap past midnight as two blocks
Special hours: Ramadan, school holidays, public holidays
For Ramadan sahur service or extended winter break hours, add a second OpeningHoursSpecification block with validFrom and validThrough. Google prefers the special block when its date range covers today.
thMenu's admin "Opening Hours" page generates this structure automatically — pick days from a UI, the system emits ISO time, builds separate validFrom-validThrough blocks for Ramadan/holidays, and injects JSON-LD into your menu page. No hand-written schema required.
FAQ
How long until the badge appears? After Rich Results Test passes, expect 7-14 days. URL Inspection in Search Console can shorten this to 3-5 days.
How do I encode hours past midnight? Use two blocks: "23:00-23:59" and "00:00-02:00". Single blocks crossing midnight fail validation.
If GMB and schema disagree, which wins? Google usually picks the most recently updated and most specific source — keep both consistent to avoid mismatch flags.
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