A world map. Green areas (most of the US and Canada, Europe, some of Australia, a tiny bit of South America, and a sliver of Africa) do daylight savings in the summer. The vast majority of the world, show in white, doesn't.
https://media.mastodon.scot/mastodon-scot-public/media_attachments/files/110/017/234/360/981/138/original/fe82f2f80f38b9ec.png