> For the complete documentation index, see [llms.txt](https://docs.os.uk/more-than-maps/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/more-than-maps/geographic-data-visualisation/geodataviz-assets/30daymapchallenge.md).

# #30DayMapChallenge

The [#30DayMapChallenge](https://30daymapchallenge.com/) is the brainchild of Finnish cartographer Topi Tjukanov and is a daily cartography and data visualization challenge aimed at the spatial community.\
Every day throughout November a different theme is set and participants create a map or data visualisation based on that theme and share their results on social media using the #30DayMapChallenge hashtag.

Every year staff at Ordnance Survey get involved and share our submissions via a virtual gallery.

<table data-view="cards"><thead><tr><th></th><th align="center"></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td></td><td align="center">#30DayMapChallenge 2021</td><td></td><td><a href="https://labs.os.uk/public/30-day-map-challenge/2021/">https://labs.os.uk/public/30-day-map-challenge/2021/</a></td><td data-object-fit="cover" data-alt="Screenshot of the #30DayMapChallenge 2021 gallery leading people to the Ordnance Survey entries"><a href="/files/UuaSVlivDCZfXNlGnsWV">/files/UuaSVlivDCZfXNlGnsWV</a></td></tr><tr><td></td><td align="center">#30DayMapChallenge 2022</td><td></td><td><a href="https://labs.os.uk/public/30-day-map-challenge/2022/">https://labs.os.uk/public/30-day-map-challenge/2022/</a></td><td data-object-fit="cover" data-alt="Screenshot of the #30DayMapChallenge 2022 gallery leading people to the Ordnance Survey entries"><a href="/files/qDPZh1Zs3kbJpkZpN37n">/files/qDPZh1Zs3kbJpkZpN37n</a></td></tr><tr><td></td><td align="center">#30DayMapChallenge 2023</td><td></td><td><a href="https://labs.os.uk/public/30-day-map-challenge/2023/">https://labs.os.uk/public/30-day-map-challenge/2023/</a></td><td data-object-fit="cover" data-alt="Screenshot of the #30DayMapChallenge 2023 gallery leading people to the Ordnance Survey entries"><a href="/files/IypFmxckjV1uWmtVvtb7">/files/IypFmxckjV1uWmtVvtb7</a></td></tr><tr><td></td><td align="center">#30DayMapChallenge 2024</td><td></td><td><a href="https://labs.os.uk/public/30-day-map-challenge/2024/">https://labs.os.uk/public/30-day-map-challenge/2024/</a></td><td data-object-fit="cover" data-alt="Screenshot of the #30DayMapChallenge 2024 gallery leading people to the Ordnance Survey entries"><a href="/files/f1B5kMb6uHWbzPlUDtIX">/files/f1B5kMb6uHWbzPlUDtIX</a></td></tr><tr><td></td><td align="center">#30DayMapChallenge 2025</td><td></td><td><a href="https://labs.os.uk/public/30-day-map-challenge/2025/">https://labs.os.uk/public/30-day-map-challenge/2025/</a></td><td data-object-fit="cover" data-alt="Screenshot of the #30DayMapChallenge 2025 gallery leading people to the Ordnance Survey entries"><a href="/files/tImenDniZsrR0QnvVjFA">/files/tImenDniZsrR0QnvVjFA</a></td></tr></tbody></table>


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