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Grade 8US Time Zones

US Time Zones: States, Offsets, and Calculations

Drills Grade 8 students on all six US time zones, the states in each zone, and how to calculate correct local times when crossing from one zone to another.

20 questions · Matching · Multiple choice · Fill in the blank · Short answer · Analysis

The United States spans four standard time zones across its contiguous 48 states, plus two additional zones for Alaska and Hawaii, creating a system that every geographically literate citizen should understand. This worksheet guides Grade 8 students through all six zones — Eastern, Central, Mountain, Pacific, Alaska, and Hawaii-Aleutian — by asking them to match zones to their UTC offsets, solve time-conversion problems, complete factual statements about zone boundaries, and write analytical responses explaining the purpose of the system. Students also examine why Hawaii and Arizona opt out of daylight saving time, and what it means for a broadcast or business meeting to span multiple zones. Pair this sheet with a US time zone map for deeper engagement.

US Time Zones: States, Offsets, and Calculations — Grade 8

Use the fact box above when calculating times, and show your full reasoning in the short-answer section.

Remember

  • The six US time zones, from east to west, are: Eastern, Central, Mountain, Pacific, Alaska, and Hawaii-Aleutian.
  • Each time zone is one hour behind the zone directly to its east; Eastern Time is three hours ahead of Pacific Time.
  • Daylight saving time advances clocks one hour each spring in most US states; a few states observe standard time all year.

Part A — Match each time zone to its UTC offset during standard time

Match each time zone in the left column to its correct UTC offset by writing the matching phrase on the line.

Choose from

  • A. UTC minus 7 hours during standard time
  • B. UTC minus 5 hours during standard time
  • C. UTC minus 8 hours during standard time
  • D. UTC minus 6 hours during standard time
  1. 1.

    Eastern Time Zone

  2. 2.

    Central Time Zone

  3. 3.

    Mountain Time Zone

  4. 4.

    Pacific Time Zone

Part B — Multiple Choice: Time Zones, States, and Calculations

Circle the one correct answer for each question.

  1. 5.

    If it is 12:00 PM Eastern Time in New York, what is the time in Los Angeles, which observes Pacific Time?

    1. A.9:00 AM
    2. B.10:00 AM
    3. C.2:00 PM
    4. D.3:00 PM
  2. 6.

    Which state is divided between Eastern Time in its east and Central Time in its west, with Memphis in the Central zone?

    1. A.Kentucky
    2. B.Georgia
    3. C.Tennessee
    4. D.Alabama
  3. 7.

    Moving westward across US time zones, each successive zone is how many hours behind the zone immediately to its east?

    1. A.30 minutes
    2. B.1 hour
    3. C.2 hours
    4. D.3 hours
  4. 8.

    Which US state observes the Hawaii-Aleutian Time Zone and does not observe daylight saving time?

    1. A.Alaska
    2. B.Hawaii
    3. C.Arizona
    4. D.Oregon
  5. 9.

    A flight departs Seattle at 8:00 AM Pacific Time and lands in Dallas after 3 hours of flight time. What is the local arrival time?

    1. A.10:00 AM
    2. B.11:00 AM
    3. C.12:00 PM
    4. D.1:00 PM
  6. 10.

    Which statement correctly describes the time difference between Eastern Time and Pacific Time during standard time?

    1. A.Eastern is 2 hours ahead of Pacific
    2. B.Eastern is 3 hours ahead of Pacific
    3. C.Pacific is 1 hour ahead of Eastern
    4. D.Eastern is 4 hours ahead of Pacific

Part C — Fill in the Blank

Write the word or phrase that correctly completes each sentence.

  1. 11.

    The Pacific Time Zone encompasses the westernmost contiguous states, including California, Oregon, and ____.

  2. 12.

    When a television program airs at 8:00 PM Eastern Time, viewers in the Mountain Time Zone must tune in at ____.

  3. 13.

    Arizona observes Mountain Standard Time throughout the year because the state does not participate in ____.

  4. 14.

    Because each zone is one hour behind the zone to its east, Hawaii-Aleutian Time is ____ hours behind Eastern Time.

  5. 15.

    When it is 2:00 PM in Chicago, which is in the Central Time Zone, it is ____ in Seattle, which is in the Pacific Time Zone.

  6. 16.

    Tennessee is split between two time zones; its eastern cities, including Knoxville, observe ____ Time, while Memphis is in Central Time.

Part D — Short Answer: Analysis and Explanation

Answer each question in two to three complete sentences, showing your reasoning.

  1. 17.

    A meeting begins at 9:00 AM Pacific Time. What time must Eastern Time Zone staff attend, and why does this gap create scheduling challenges?

  2. 18.

    Name one Eastern Time state and one Central Time state, then explain how the one-hour difference affects a live national TV broadcast.

  3. 19.

    Explain why the US uses multiple time zones instead of one, and describe one practical problem a single national clock would cause.

  4. 20.

    Compare why Hawaii and Arizona both skip daylight saving time, considering how geography and climate shape the decision in each state.

Answer key

Part A — Match each time zone to its UTC offset during standard time

  1. 1.UTC minus 5 hours during standard time
  2. 2.UTC minus 6 hours during standard time
  3. 3.UTC minus 7 hours during standard time
  4. 4.UTC minus 8 hours during standard time

Part B — Multiple Choice: Time Zones, States, and Calculations

  1. 5.9:00 AM
  2. 6.Tennessee
  3. 7.1 hour
  4. 8.Hawaii
  5. 9.1:00 PM
  6. 10.Eastern is 3 hours ahead of Pacific

Part C — Fill in the Blank

  1. 11.Washington
  2. 12.6:00 PM
  3. 13.daylight saving time
  4. 14.5
  5. 15.12:00 PM
  6. 16.Eastern

Part D — Short Answer: Analysis and Explanation

  1. 17.Example: Eastern Time is three hours ahead of Pacific Time, so Eastern staff must join the meeting at 12:00 PM noon. While noon is workable, it compresses the Eastern employees' morning and limits the window of overlapping business hours available during a single workday. Companies with offices in both zones must negotiate start times that fall within a reasonable workday for all participants, which becomes even harder when Alaska or Hawaii offices are included.
  2. 18.Example: New York is in the Eastern Time Zone and Illinois is in the Central Time Zone. When a live event airs at 9:00 PM Eastern, viewers in Illinois receive it at 8:00 PM Central, which is still prime time for both audiences. However, networks airing events live at 11:00 PM Eastern create a 10:00 PM Central broadcast that may cost them viewers who have already gone to bed, demonstrating how even a single hour of difference shapes audience decisions.
  3. 19.Example: The US spans roughly 3,000 miles from east to west, so the sun rises and sets at very different clock times across the country. Multiple time zones keep noon roughly aligned with solar midday in each region, which allows daily routines to match natural daylight. If one clock were used nationwide, sunrise in western states might not occur until 10:00 AM by the clock, making school start times and standard 9-to-5 work schedules deeply misaligned with available daylight.
  4. 20.Example: Hawaii sits close to the equator, where the length of daylight changes very little between summer and winter, making a seasonal clock shift unnecessary and disruptive for no meaningful gain. Arizona has an extreme desert climate, and shifting clocks forward would push the hottest part of the afternoon further into evening hours, increasing demand for air conditioning when temperatures are already dangerous. Both states benefit from a stable, year-round clock, but the geographic and climatic reasons behind each decision are entirely different.

What this sheet teaches

  • Identify the six US time zones and name at least one state located in each zone.
  • Calculate the local time in a given zone when the time in another zone is known.
  • Explain why the US uses multiple time zones and analyze how the differences affect daily life.

Notes for the adult

  • Students often add hours when moving west; remind them that westward travel means earlier sunrise, so the clock goes back.
  • Correct this by having students draw a number line with Eastern on the right and Hawaii-Aleutian on the left, labeling each UTC offset.
  • A student is ready to move on when they can name the correct time zone for any given state without consulting a reference.

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