Question 1
A town is located at $123°$E longitude. How many hours ahead of Coordinated Universal Time (UTC) is this town, assuming it observes the nearest standard time zone?
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General Mathematics · Unit 3 · Earth geometry and time zones · Time zones
Understand the link between longitude and time.
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Question 2
Calculate the time in Mumbai (GMT +5:30) when it is 3:45 pm on Wednesday in Los Angeles (GMT −8). Show your working.
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Question 3
A research vessel departs from Port Darwin at 12° 28′ S, 130° 51′ E at 08:00 local time. The vessel's home port is at the same latitude, but the sun rises exactly 2 hours and 12 minutes earlier at the home port. Calculate the longitude of the home port.
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More in Time zones
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Solve practical problems involving time zones, making allowances for daylight saving where necessary, e.g. seasonal time systems used by Aboriginal peoples and Torres Strait Islander peoples, making phone calls, broadcasting events, travelling, preparing an itinerary.
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Understand the meaning of Greenwich Mean Time (GMT), International Date Line and Coordinated Universal Time (UTC).