{
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  "path": "/user/rene78/diary/408318",
  "publishedAt": "2026-03-05T05:28:55.000Z",
  "site": "https://www.openstreetmap.org",
  "tags": [
    "opening_hours evaluation tool"
  ],
  "textContent": "Until recently, I mainly used the opening_hours evaluation tool to quickly generate valid OSM opening hours. However, it often requires some manual work to simplify the syntax afterwards.\n\nThat’s why I tried using ChatGPT instead - and it works surprisingly well. You can simply copy and paste opening hours from websites, or even upload an image, and ask it to format them for the `opening_hours` tag.\n\n# Example\n\n## LLM query\n\n\n    please format the opening hours in the attached image for the OSM 'opening_hours' tag.\n\n\n## Output\n\n\n    Mo 13:00-18:00; Tu-Th 09:30-18:00; Fr 09:30-21:00; Sa 09:00-17:00; Su off\n\n\nThis is a rather simple example, but it also works well with more complex opening hours.",
  "title": "Very fast way to create opening hours for OSM with LLM's"
}