# #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.
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#30DayMapChallenge 2021https://labs.os.uk/public/30-day-map-challenge/2021/2021.png
#30DayMapChallenge 2022https://labs.os.uk/public/30-day-map-challenge/2022/2022.png
#30DayMapChallenge 2023https://labs.os.uk/public/30-day-map-challenge/2023/2023 gallery.png
#30DayMapChallenge 2024https://labs.os.uk/public/30-day-map-challenge/2024/#30DayMapChallenge_2024 (1).png
#30DayMapChallenge 2025https://labs.os.uk/public/30-day-map-challenge/2025/#30daymapchallenge_2025.png