Tuesday, 3 November 2015

Calculating Time Differences

WALT: calculate time differences.

Below are the time differences New Zealand has with many other countries/ cities in the world. As we know this is because of the International Dateline which is located in Greenwich, to the right of New Zealand. 

If it is 10am on a Wednesday in Wellington, New Zealand what time would it be in these countries? 

Phuket                    5 hours    5am Wednesday
Indonesia                5 hours.          5am Wednesday
Spain                    10 hours.        12am Wednesday
Texas                    17 hours.         5pm Tuesday
Egypt                    10 hours.         12am Wednesday
Ukraine                9 hours.           1am Wednesday
Iran                    9 ½ hours    12:30am Wednesday                Scotland                11 hours          11pm Tuesday
Honolulu                10 hours.         12am Wednesday
Christchurch                0 hours.           10am Wednesday
Korea                    3 hours.           7am Wednesday
Beijing                    5 hours.           5am Wednesday
Adelaide                2 hours.           8am Wednesday
Dubai                    9 hours.           1am Wednesday
San Salvador                18 hours.         4pm Tuesday
Las Vegas                10 hours    12am Wednesday    

What is the importance of the international dateline?

The International Date Line is an imaginary line on the surface of the Earth that runs from the north pole to the south pole and demarcates the change of one calendar day to the next. It passes through the middle of the Pacific Ocean, roughly following the 180° line of longitude        

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