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Time zones: why it's night in Sydney when it's day in London

Tests: 2 of 12 right · Exam: 1 of 4 right · Kind: ★★ · Understood: 5 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 120 of the world course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★★ · wrong ✗

Jake's cousin in Sydney, in her pyjamas: "Mate, it's 8 at night here, yeah nah, can't play." ("Yeah nah" means no.) Why is it night there?

  • 1. Sydney is 11 hours behind London, so it's still last night's evening there — ← Mova's choice · score 4
  • 2. Sydney is closer to the Moon than London — no support
  • 3. Sydney is far east of London, so its evening comes 11 hours earlier — ✓ the right answer · no support
  • 4. Australians always go to bed at 9 am — no support

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 4, the only option with support. Its support: lesson 120, line 9: «In January Sydney is 11 hours ahead of London, so 9 am in London is 8 pm in Sydney.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «sydney» (+2); the same thing acted on «11 hours» (+2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · wrong ✗

Ellie: "Why don't we all use one time? Easier, innit." What would happen?

  • 1. The Sun would rise at the same moment everywhere — ← Mova's choice · no support
  • 2. Noon would be dark in half the world — ✓ the right answer · no support
  • 3. Nothing at all would change for anyone — no support
  • 4. Everyone would wake at the same sunrise — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 3 · ★★ · right ✓

Charlotte: "We leave at 11 and fly 8 hours, so we land at 7 pm, simples." What's wrong?

  • 1. 7 pm is London time; in New York it's 2 pm — ← Mova's choice · ✓ the right answer · no support
  • 2. She'll land at 11 am in New York — no support
  • 3. She'll land at 3 am in New York — no support
  • 4. Nothing, it will be 7 pm in New York — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 4 · ★★ · wrong ✗

Ivan: "I landed before I took off, I'm a time traveller, no cap!" ("No cap" means honestly.) What really happened?

  • 1. His watch broke over the ocean and started running backwards in time — ← Mova's choice · no support
  • 2. He crossed the date line going east, and the date went back a day — ✓ the right answer · no support
  • 3. The plane flew faster than time itself, so it arrived before leaving — no support
  • 4. He flew for minus fourteen hours, which planes can do over the ocean — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · wrong ✗

Amir's dad, at 2 pm in London: "The New York lot are just starting their day." Why?

  • 1. New Yorkers start work at 2 pm — ← Mova's choice · no support
  • 2. Offices everywhere open at the same moment — no support
  • 3. New York is 5 hours behind, so it's 9 am there — ✓ the right answer · no support
  • 4. New York is 5 hours ahead, so it's 7 pm — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 6 · ★★ · right ✓

Zara: "Why's Babusia (grandma) always ringing so early for dinner?" She rings at 7 pm Kyiv time. What time is it in London?

  • 1. 5 pm — ← Mova's choice · ✓ the right answer · no support
  • 2. 3 pm — no support
  • 3. 9 pm — no support
  • 4. 7 pm — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · wrong ✗

Sophie's dad, in Manchester in winter: "I'll bell you at 6." ("Bell" means phone.) He rings at 6 his time. Why is Sophie, in Dubai, cross?

  • 1. It's 6 pm in Dubai, so nothing is wrong — ← Mova's choice · no support
  • 2. It's 10 pm in Dubai and she was asleep — ✓ the right answer · no support
  • 3. It's 2 pm in Dubai and she's at the pool — no support
  • 4. It's 6 am in Dubai and she's still in bed — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 8 · ★★ · wrong ✗

Luca, in Rome, Italy, in July, sees "Event at 18:00 UTC" and sets his alarm for 18:00. What happens?

  • 1. He's exactly on time — ← Mova's choice · score 4
  • 2. He's 2 hours late — no support
  • 3. He's 2 hours early; it starts at 20:00 his time — ✓ the right answer · no support
  • 4. He misses it by a whole day — no support

Why: It took the question to ask what happens next. It chose option 1 with score 4, the only option with support. Its support: lesson 120, line 15: «Italy in summer is 2 hours ahead of UTC, so 18:00 UTC is 20:00 in Italy.», reached through what followed the sentence the question matched. What matched: the same circumstance (+4); the same light verb (be, have, do, get, go) (+1). Against it: a different doer (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · wrong ✗

Max: "Pilots must get proper muddled flying through loads of zones." What do they do?

  • 1. They use UTC, one world time, so 14:00 is the same moment everywhere — ✓ the right answer · no support
  • 2. They change their watches every fifteen minutes, all the way across the sky — score 5
  • 3. They use the time of whatever country is below — ← Mova's choice · score 7
  • 4. They use no clocks at all, only the Sun — no support

Why: It took the question to ask what is done. It chose option 3 with score 7, against 5 for the next best. Its support: lesson 103, line 13: «Armies, ships and pilots say 24-hour times as "hundred hours": 0600 is "oh six hundred", 6 am, and 1400 is "fourteen hundred", 2 pm.», reached through the remembered sentence the question matched. What matched: the same doer «armies» (+5); the same property (+2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · ★★ · wrong ✗

What would happen to the width of a one-hour time zone if the Earth spun once every 12 hours?

  • 1. It would be about 30 degrees wide — ✓ the right answer · score 4
  • 2. It would shrink to about 7 degrees — score 3
  • 3. Time zones would disappear altogether — score 2
  • 4. It would stay 15 degrees wide, as now — ← Mova's choice · score 6

Why: It took the question to ask what happens next. It chose option 4 with score 6, against 4 for the next best. Its support: lesson 120, line 1: «As the Earth spins, morning sweeps round the planet, so it cannot be the same clock time everywhere and still be light at noon. The world is cut into time zone…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «noon» (+4); the same action «stay» (+2). The right option, 1, scored 4. · the question and its options parsed, with trees and pragmatics

Test 11 · ★★ · wrong ✗

Noah, a Yorkshire lad: "Earth turns 360 degrees in 24 hours, so how wide's a time zone, like?"

  • 1. About 1 degree — ← Mova's choice · no support
  • 2. About 15 degrees — ✓ the right answer · no support
  • 3. About 24 degrees — no support
  • 4. About 36 degrees — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 12 · ★★ · wrong ✗

A World Cup final kicks off at 20:00 local time in a country 7 hours behind you. Your mate: "Easy, that's 1 pm for us." What's right?

  • 1. Your mate's right, 1 pm — no support
  • 2. It's 8 pm for you as well — ← Mova's choice · score 4
  • 3. It's 7 pm for you — no support
  • 4. It's 3 am the next day for you — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 103, line 2: «To say which half you mean, people add "am" (before midday, from Latin "ante meridiem") or "pm" (after midday, "post meridiem"). Pick the wrong one and your 7:…», reached through the remembered sentence the question matched. What matched: the same circumstance (+4); the same thing acted on «pm» (+2). Against it: a different doer (counts against) (-2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Given that the Earth completes one rotation of 360 degrees in 24 hours, determine the angle through which it rotates in one hour.

  • 1. Twenty-four degrees — ← Mova's choice · no support
  • 2. Fifteen degrees — ✓ the right answer · no support
  • 3. Sixty degrees — no support
  • 4. Thirty-six degrees — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

A flight departs London at 11:00 London time and is of eight hours' duration; New York is five hours behind London. Ascertain the local time of arrival in New York.

  • 1. 16:00 — ← Mova's choice · no support
  • 2. 03:00 — no support
  • 3. 14:00 — ✓ the right answer · no support
  • 4. 19:00 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Select the response consistent with the established facts concerning places situated to the east of an observer.

  • 1. Their clocks are regulated by the phases of the Moon — ← Mova's choice · no support
  • 2. Their clocks are, in general, ahead of those of the observer — ✓ the right answer · no support
  • 3. Their clocks are, in general, behind those of the observer — no support
  • 4. Their clocks invariably coincide with those of the observer — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Identify the principal purpose of Coordinated Universal Time.

  • 1. To provide one standard time that prevents confusion between zones — ← Mova's choice · ✓ the right answer · no support
  • 2. To replace all local clock times throughout the world with that of Washington — no support
  • 3. To regulate the hours of sunrise and sunset in every country of the world — no support
  • 4. To determine the dates of the principal religious festivals each year — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/120-time-zones/