Time Zones online exercise - Free Printable

Let’s solve each question step by step using the time zone map.

We know that Greenwich is at 0 hours offset (also called UTC+0). That means when it’s a certain time in Greenwich, we can find other cities’ times by adding or subtracting hours based on their time zone.

Looking at the bottom of the map, there’s a row with numbers like -11, -10, ..., 0, +1, +2, etc. These are the hour offsets from Greenwich.

Also, note:
- If a city is to the west of Greenwich (like Los Angeles, New York), its time is earlier → subtract hours.
- If a city is to the east of Greenwich (like Moscow, New Delhi, Perth), its time is later → add hours.

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Question 1: If it is 1 p.m. in Greenwich. What time is it in Los Angeles?

→ Find Los Angeles on the map. It’s under the column labeled “-8” (see bottom row: under LA it says -8).

So, subtract 8 hours from 1 p.m.

1 p.m. minus 8 hours = 5 a.m. (because 1 p.m. → 12 p.m. → 11 a.m. → ... → 5 a.m.)

✔ Answer: 5 a.m.

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Question 2: If it is 3 p.m. in Greenwich. What time is it in Moscow?

→ Moscow is under “+3” (bottom row shows +3 for Moscow).

Add 3 hours to 3 p.m.

3 p.m. + 3 hours = 6 p.m.

✔ Answer: 6 p.m.

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Question 3: If it is 5 p.m. in Greenwich. What time is it in New Delhi?

→ New Delhi is under “+5” (bottom row: +5)

Add 5 hours to 5 p.m.

5 p.m. + 5 hours = 10 p.m.

✔ Answer: 10 p.m.

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Question 4: If it is 7 p.m. in Greenwich. What time is it in New York?

→ New York is under “-5” (bottom row: -5)

Subtract 5 hours from 7 p.m.

7 p.m. – 5 hours = 2 p.m.

✔ Answer: 2 p.m.

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Question 5: If it is 9 p.m. in Greenwich. What time is it in Perth?

→ Perth is under “+8” (bottom row: +8)

Add 8 hours to 9 p.m.

9 p.m. + 8 hours = 5 a.m. next day? Wait — let’s count:

9 p.m. → 10, 11, 12 (midnight), 1, 2, 3, 4, 5 → that’s 8 hours later → 5 a.m.

But wait — check the top bar! The top bar goes up to midnight, then starts again at 1 a.m. So yes, 9 p.m. + 8 hours = 5 a.m. (next day).

BUT — look at the map: Perth is shown under the “5 a.m.” column on the TOP bar? Let me double-check.

Actually, looking at the top orange bar:
Perth lines up with “5 a.m.” on the top? No — wait, the top bar is labeled with times corresponding to Greenwich time.

Wait — actually, the top bar shows what time it is in each zone WHEN it is noon in Greenwich? No — let’s read carefully.

Actually, the top bar is aligned so that if you go down from “noon” in the top bar, you hit Greenwich. So the top bar shows local time in each zone when it is noon in Greenwich? Not exactly.

Better way: use the bottom row offsets.

Perth is +8. So 9 p.m. + 8 = 5 a.m. next day.

But the answer format just asks for a.m./p.m., and doesn’t specify day — so we write 5 a.m.

However, let’s verify with the map visually.

On the map, Perth is under the vertical line that corresponds to “5 a.m.” on the top bar? Actually, no — let’s see:

The top bar has “1 a.m.” on far left, then 2, 3... up to midnight on far right.

Greenwich is under “noon”.

Perth is 8 hours ahead → so when it’s noon in Greenwich, it’s 8 p.m. in Perth? But that contradicts our earlier calculation.

Wait — I think I made a mistake.

Let me reorient.

The key is: the bottom row tells us the offset from Greenwich.

For example, Los Angeles is -8 → so when it’s 12:00 noon in Greenwich, it’s 4:00 a.m. in LA (12 - 8 = 4 a.m.).

Similarly, Perth is +8 → when it’s 12:00 noon in Greenwich, it’s 8:00 p.m. in Perth.

Now, back to Question 5: If it is 9 p.m. in Greenwich, what time in Perth?

Perth is +8 → 9 p.m. + 8 hours = 5 a.m. next day.

Yes, that’s correct.

But let’s check the top bar alignment.

In the image, Perth is located under the vertical line that aligns with “5 a.m.” on the top bar? Actually, looking at the map:

The top bar: from left to right: 1 a.m., 2 a.m., ..., 11 a.m., noon, 1 p.m., ..., 11 p.m., midnight.

Greenwich is under “noon”.

Perth is to the right of Greenwich — specifically, 8 columns to the right? Each column is 1 hour.

From noon (Greenwich) moving right: 1 p.m., 2 p.m., 3 p.m., 4 p.m., 5 p.m., 6 p.m., 7 p.m., 8 p.m. → that would be 8 hours later → 8 p.m.

But wait — that’s when it’s noon in Greenwich.

In our case, it’s 9 p.m. in Greenwich — which is 9 hours after noon.

So in Perth, it would be 8 p.m. + 9 hours = 5 a.m. next day.

Same result.

Alternatively, since Perth is always 8 hours ahead, 9 p.m. + 8 = 5 a.m.

So answer is 5 a.m.

But let’s confirm with another point.

Take New York: -5. When it’s noon in Greenwich, it’s 7 a.m. in NY (12 - 5 = 7 a.m.). On the map, New York is under “7 a.m.” on the top bar? Yes — looks like it.

Similarly, Los Angeles: -8 → 12 - 8 = 4 a.m. → and on map, LA is under “4 a.m.”? Actually, in the image, LA is under “5 a.m.”? Wait, let me check the original image description.

Wait — in the user’s image, under Los Angeles, the bottom row says “-8”, and the top bar above LA shows “5 a.m.”? That doesn’t match.

I think I need to trust the bottom row offsets, as they are explicit.

Bottom row: for Los Angeles, it says “-8”. For New York, “-5”. For Moscow, “+3”. For New Delhi, “+5”. For Perth, “+8”.

These are standard time zones.

So calculations should be based on these offsets.

Thus:

Q1: 1 p.m. GMT → LA (-8) → 1 - 8 = -7 → which is 5 a.m. (since 1 p.m. minus 8 hours: 1 p.m. → 12 p.m. → 11 a.m. → 10 → 9 → 8 → 7 → 6 → 5 a.m.)

Q2: 3 p.m. GMT → Moscow (+3) → 3 + 3 = 6 p.m.

Q3: 5 p.m. GMT → New Delhi (+5) → 5 + 5 = 10 p.m.

Q4: 7 p.m. GMT → New York (-5) → 7 - 5 = 2 p.m.

Q5: 9 p.m. GMT → Perth (+8) → 9 + 8 = 17 → 17:00 is 5 p.m.? Wait no!

Mistake here!

9 p.m. is 21:00 in 24-hour time.

21:00 + 8 hours = 29:00 → 29 - 24 = 5:00 → which is 5 a.m. next day.

Yes, so 5 a.m.

But 9 p.m. + 8 hours:

Start at 9 p.m.

+1 → 10 p.m.

+2 → 11 p.m.

+3 → 12 a.m. (midnight)

+4 → 1 a.m.

+5 → 2 a.m.

+6 → 3 a.m.

+7 → 4 a.m.

+8 → 5 a.m.

Yes, correct.

So all answers are:

1. 5 a.m.

2. 6 p.m.

3. 10 p.m.

4. 2 p.m.

5. 5 a.m.

Now, to present final answer as per instruction.

Final Answer:
5 a.m.
6 p.m.
10 p.m.
2 p.m.
5 a.m.