A time zone map looks like a map of the Earth. It is not. It is a map of who decides.
The lines bend around borders, jump over territories, and occasionally loop back on themselves — not because of anything the sun is doing, but because a jurisdiction ends there and another begins.
Here are the places where that is most visible.
PHOENIX — seven clock changes on a single drive.
Arizona does not observe daylight saving. It tried in 1967 and its legislature rejected it in 1968, on the reasoning that an extra hour of evening sun in a desert means an extra hour of air conditioning. A 1969 study found DST raised Phoenix's electricity use by 1 to 4%.
But the Navajo Nation, in the northeast, does observe it — its territory extends into Utah and New Mexico, which do. The Hopi Reservation, entirely surrounded by the Navajo Nation, does not. There is also a smaller piece of Navajo Nation inside the Hopi Nation, and a separate Hopi area next to the main one.
Drive the right route across that corner during daylight saving months and you will change your clock seven times. Not once for crossing a meridian.
→ Phoenix
ÜRÜMQI AND LHASA — the western end of one national clock.
China abolished its five time zones in 1949 and put everything on Beijing Time. Lhasa, at 91° east, is about two hours from its own solar noon. Ürümqi, at 88° east, is about the same, and in the far west the official midwinter sunrise can fall around ten in the morning.
So Xinjiang runs a second, unofficial clock two hours behind Beijing. It has no legal standing. The international time zone database carries an entry for it anyway: `Asia/Urumqi`.
BROKEN HILL — a town in the wrong state's time.
Broken Hill is a mining town in far western New South Wales. It votes in New South Wales elections. It keeps South Australian time — half an hour behind the rest of its own state — because its road and rail links run west to Adelaide rather than east to Sydney.
A few thousand people, inside a state of eight million, with their own officially recognised clock.
GUANTÁNAMO — a different daylight saving schedule from the island it sits on.
Cuba has introduced daylight saving five separate times since 1928, on its own dates. The Guantánamo Bay naval base observes daylight saving in synchronisation with its headquarters in Florida, regardless of what Cuba is doing.
→ Havana
BEIRUT — a country in two time zones, in a country 88 kilometres wide.
On 23 March 2023 the caretaker prime minister postponed Lebanon's clock change until after Ramadan. The Maronite Church said it had not been consulted and would move its clocks forward anyway. Christian schools and two television channels followed. Muslim institutions largely stayed on winter time.
For about two days, Lebanon ran on two clocks at once. Search engines gave different answers for the time. The national airline kept its clocks on winter time but moved every departure forward an hour to stay aligned with international schedules. The cabinet reversed the decision on 27 March.
→ Beirut
JERUSALEM — the same zone, different dates.
Israel and the Palestinian territories both use UTC+2 in winter and UTC+3 in summer. The dates have often differed. In 2021 the territories ended daylight saving two days before Israel. In 2023 the two were on different time for 24 hours. And in 2011 the West Bank and Gaza ran on different times from each other.
So: the sun crosses a meridian. Everything else on the map is a decision.