The US Time Zones Quiz is a free, interactive way to learn which of the six US time zones each of the 50 states belongs to — and what its UTC offset is. Work through a clean, mobile-friendly map of the United States and test yourself until Eastern, Central, Mountain, Pacific, Alaska, and Hawaii–Aleutian time all click into place.

Unlike the dated list-and-grid quizzes elsewhere, this one is built around a real map. Four game modes let you name a state’s time zone, name its UTC offset, tap any state inside a named zone, or race the clock — and a daily challenge gives everyone the same six-state puzzle each day, with a shareable result and a running streak.

Whether you are a student, a remote worker juggling meetings across zones, or just brushing up your US geography, the quiz keeps score, tracks your accuracy, and has a Learn mode that explains the tricky bits: the fourteen states split between two zones, and why Arizona and Hawaii sit out daylight saving time.

How to play

The quiz has four practice modes plus a daily challenge and a learn mode. Pick a mode and a difficulty (multiple choice, first-letter hint, or type the answer) and go:

Name the Zone — a state lights up on the map; choose or type which of the six time zones it is in.
UTC Offset — name the state’s standard UTC offset (for example, UTC−6 for Central). Typed answers are lenient: UTC−6, -6, and 6 all count.
Find a State — you are given a time zone; tap any state that belongs to it. The whole zone lights up so you can see the pattern.
Speed Round — type the time zone for as many states as you can before the clock runs out.
Daily Challenge — six states, the same for everyone each day, with a shareable green/red emoji grid and a day streak.
Learn Mode — a US map tinted by time zone, with a legend; tap any state for its zone, its standard and daylight abbreviations and offsets, and a note explaining any split or daylight-saving quirk.

How many time zones does the US have?

The 50 states span six time zones. From east to west they are Eastern (UTC−5), Central (UTC−6), Mountain (UTC−7), Pacific (UTC−8), Alaska (UTC−9), and Hawaii–Aleutian (UTC−10). During daylight saving time each of those (except most of Hawaii and Arizona) shifts one hour later. Counting the overseas territories — such as the Atlantic, Samoa, Chamorro, and Wake Island zones — the United States as a whole uses nine.

Eastern is the most populous zone, covering 21 states; Central covers 16; Mountain 7; Pacific 4; and Alaska and Hawaii–Aleutian one each. This quiz maps every state to its predominant zone (by population).

Which states are split between two time zones?

Fourteen states straddle a zone boundary: Florida, Indiana, Kentucky, Michigan, Tennessee, Kansas, Nebraska, North Dakota, South Dakota, Texas, Idaho, Nevada, Oregon, and Alaska. Some famous traps — Tennessee is mostly Central (Nashville, Memphis) but East Tennessee (Knoxville, Chattanooga) is Eastern; Kentucky is split down the middle with Louisville on Eastern; the Florida Panhandle around Pensacola is Central while the rest of the state is Eastern. In the quiz these states are flagged, and Learn mode explains exactly where the line falls.

Tips for learning the US time zones

Move west and subtract an hour at each zone: Eastern → Central → Mountain → Pacific each drop one hour.
Anchor on big cities: New York = Eastern, Chicago = Central, Denver = Mountain, Los Angeles = Pacific.
Watch the split states — the boundary usually follows population, so the quiz uses each state’s predominant zone.
Arizona (except the Navajo Nation) and Hawaii do not observe daylight saving time, so their clocks stay put while everyone else springs forward.

Data & method

The map geometry comes from us-atlas (US Census / Natural Earth, public domain). The state-to-zone assignments and UTC offsets are drawn from the US Department of Transportation time-zone boundaries and Wikipedia’s “Time in the United States”. Everything is bundled into the app at build time — the quiz makes no external calls as you play. Each state is mapped to its predominant time zone; split states are noted rather than double-counted.

Frequently asked questions

How many time zones does the US have?

The 50 states use six: Eastern, Central, Mountain, Pacific, Alaska, and Hawaii–Aleutian. Including the overseas territories, the United States uses nine time zones in total.

Which states are split between two time zones?

Fourteen: Florida, Indiana, Kentucky, Michigan, Tennessee, Kansas, Nebraska, North and South Dakota, Texas, Idaho, Nevada, Oregon, and Alaska. The quiz assigns each its predominant (most-populated) zone and flags it, and Learn mode explains where the boundary runs.

Why doesn’t Arizona change its clocks?

Most of Arizona stays on Mountain Standard Time year-round and does not observe daylight saving time, so in summer it lines up with Pacific Time. The Navajo Nation within Arizona is the exception and does observe DST. Hawaii also skips daylight saving.

What’s the difference between standard time and daylight time?

Standard time is a zone’s baseline UTC offset (Eastern = UTC−5). During daylight saving time, from mid-March to early November, clocks move one hour later (Eastern becomes UTC−4, or EDT). The quiz uses standard-time offsets, and Learn mode shows both.

Does it work on mobile?

Yes. The quiz is mobile-first with large tap targets, and the map, answer buttons, and daily challenge all work on phones and tablets as well as on desktop.

Where does the data come from?

Map shapes from us-atlas (US Census / Natural Earth, public domain); time-zone assignments and offsets from the US DOT time-zone map and Wikipedia. All data is public-domain and bundled at build time.