Time Zones Word Problems worksheet with math exercises on calculating time differences across global cities.

Let’s go through each problem one by one. I’ll solve them step by step and check my math carefully.

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Problem 1: Flight Departure

- Leaves New York at 8:00 PM local time.
- Flight duration: 7 hours → arrives at 3:00 AM (New York time).
- London is 5 hours ahead of New York → add 5 hours to 3:00 AM = 8:00 AM.

✔ Check: 8 PM + 7 hrs = 3 AM next day. 3 AM + 5 hrs = 8 AM London time. Correct.

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Problem 2: Time Difference – Tokyo

- Los Angeles: 3:00 PM.
- Tokyo is 17 hours ahead → 3 PM + 17 hours = 8 AM next day.

✔ Check: 3 PM + 12 hrs = 3 AM next day; +5 more hrs = 8 AM. Correct.

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Problem 3: Meeting Time in Sydney

- Paris: 2:00 PM.
- Paris is 9 hours ahead of Sydney → so Sydney is 9 hours BEHIND Paris.
- Subtract 9 hours from 2:00 PM → 2 PM - 9 hrs = 5:00 AM same day.

✔ Check: If it’s 5 AM in Sydney, adding 9 hours gives 2 PM in Paris. Correct.

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Problem 4: Train Schedule – Denver Arrival

- Leaves Chicago at 9:00 AM CST.
- Denver is in MST, which is 1 hour behind CST → when it’s 9 AM in Chicago, it’s 8 AM in Denver.
- Journey takes 3 hours → 8 AM + 3 hrs = 11:00 AM MST.

✔ Check: 9 AM CST → arrive 12 PM CST → convert to MST: 12 PM - 1 hr = 11 AM MST. Correct.

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Problem 5: Time Conversion – Chicago to New York

- Chicago: 12:00 PM (CST).
- New York is 1 hour AHEAD of Chicago → 12 PM + 1 hr = 1:00 PM EST.

✔ Simple addition. Correct.

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Problem 6: TV Show in Los Angeles

- Scheduled for 8:00 PM EST (East Coast).
- Pacific Time (Los Angeles) is 3 hours behind EST → 8 PM - 3 hrs = 5:00 PM PST.

✔ Check: 5 PM PST + 3 hrs = 8 PM EST. Correct.

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Problem 7: International Call – London Time

- New York: 9:00 PM local time.
- London is 5 hours ahead → 9 PM + 5 hrs = 2:00 AM next day.

✔ Check: 9 PM + 3 hrs = midnight, +2 more = 2 AM. Correct.

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Problem 8: Webinar Start in Singapore

- CET: 10:00 AM.
- Singapore is 8 hours AHEAD of CET → 10 AM + 8 hrs = 6:00 PM.

✔ Check: 10 AM + 8 hrs = 6 PM. Correct.

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Problem 9: Business Meeting – Local Time

- PST: 3:30 PM.
- Eastern Standard Time (EST) is 3 hours AHEAD of PST → 3:30 PM + 3 hrs = 6:30 PM EST.

✔ Check: 3:30 PM + 3 hrs = 6:30 PM. Correct.

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Problem 10: Travel Planning – Sydney Arrival

- Departs London: 10:00 AM local time.
- Flight duration: 22 hours → arrives at 10 AM + 22 hrs = 8 AM next day (London time).
- Sydney is 10 hours AHEAD of London → 8 AM + 10 hrs = 6:00 PM Sydney time.

✔ Check: 10 AM + 22 hrs = 8 AM next day London time. 8 AM + 10 hrs = 6 PM Sydney time. Correct.

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Final Answers:

1. 8:00 AM
2. 8:00 AM (next day)
3. 5:00 AM
4. 11:00 AM
5. 1:00 PM
6. 5:00 PM
7. 2:00 AM (next day)
8. 6:00 PM
9. 6:30 PM
10. 6:00 PM

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Final Answer:
1. 8:00 AM
2. 8:00 AM (next day)
3. 5:00 AM
4. 11:00 AM
5. 1:00 PM
6. 5:00 PM
7. 2:00 AM (next day)
8. 6:00 PM
9. 6:30 PM
10. 6:00 PM