Gregory's Server
#30DayMapChallenge 🗺️ Day 3️⃣: Polygons
Here are the world’s time zones rendered in my favorite #CahillConcialdi projection. Each zone is colored based on its offset from UTC mapped to the color spectrum 🌈. If a region observes daylight saving, the color is based on the average of the summer and winter time.
This is inspired by a similar map created by Emīls Rode and Oskars Weilands for the Dymax Redux competition organized by the Buckminster Fuller Institute in 2013: https://mapsontheweb.zoom-maps.com/post/134062804597/timezones-by-emils-rode-and-oskars-weilands-one
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Data sources:
▪︎ tz database time zones data: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
▪︎ Release 2023b of the Timezone Boundary Builder: https://github.com/evansiroky/timezone-boundary-builder/releases/tag/2023b
▪︎ 1:50m ocean polygons from Natural Earth (to clip the time zones): https://www.naturalearthdata.com/downloads/50m-physical-vectors/50m-ocean/
Tools used:
▪︎ #QGIS @qgis ▪︎ My Cahill–Concialdi renderer: https://github.com/seav/cahill-concialdi
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Data sources:
▪︎ tz database time zones data: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
▪︎ Release 2023b of the Timezone Boundary Builder: https://github.com/evansiroky/timezone-boundary-builder/releases/tag/2023b
▪︎ 1:50m ocean polygons from Natural Earth (to clip the time zones): https://www.naturalearthdata.com/downloads/50m-physical-vectors/50m-ocean/