Find the time difference between Tehran (GMT +4 ) and Denver (GMT -7 )

The coordinates of St Petersburg are $\left(60\degree N,\ \ 30\degree E\right)$ .  What are the coordinates of Oslo if it is  $19\degree$  west of St Petersburg? 

Melbourne is 11 hours ahead of Greenwich Mean Time and Hawaii is 10 hours behind Greenwich Mean Time.

A flight leaving from Melbourne to Hawaii departs at 4 pm Melbourne time and takes 11 hours and 30 minutes.

What time will it be in Hawaii when the flight lands?

Felicity lives in Bathurst (GMT +10) and wants to telephone her father in London (GMT 0) so he receives the call on his birthday 1st May at 9:00 a.m.

What day and time in Bathurst should Felicity make the call to London?

Breon travels to work each day by train. To be at work on time he must arrive at Kings Cross station by ten past eight.

What is the latest train Breon can catch from Sutherland station?

Town A and Town B lie on the same meridian of longitude. The two cities are 420 nautical miles apart and Town B is north of Town A. Which of the following could be the possible position co-ordinates for the two cities?

Calculate

10h 47min−2h 22min

How many seconds are in a leap year?

Nagoya is located at (35°N,136°E)

(35°N,  136°E). Determine the coordinates of a point that is 20° due north of Nagoya.

Munich has the coordinates (48°N,11°E) and Paris has the coordinates (48°N,2°E).

What do these cities have in common in terms of their position on Earth’s surface?

Sydney is 10 hours ahead of UTC and Seattle is 8 hours behind UTC.

What is the time difference between the two cities, is Seattle is on standard time, and Sydney is on daylight saving time?

It is 4pm in Amsterdam (UTC +1). Find the time in New York (UTC -5)

Newcastle is part of the Eastern Standard Time zone and is 10 hours ahead of UTC. What is the standard time in Greenwich when it is 5:00p.m. Friday in Newcastle?

The time in Greenwich on the prime meridian is midnight on Monday 1 November. What is the time and day in Seattle (UTC−8)?