• Use a clock face.
• The time ends at the time of arrival.

Sumitha and her father board a bus in Tanjung Malim, Perak at 0930 hours. They are expected to arrive at Batang Kali, Selangor at 1015 hours. How long is their journey?

Puan Marlia attended a course from 4 March 2016 until 5 May 2016. How long did she attend the course? State the duration in:

 a) days

 b) months and days

• The whole world is divided into 24 time zones. The time calculation starts at the 0º line, which is the Greenwich Line in England, United Kingdom.
• Make sure the country’s location is either on the west or east.
• Find the time difference.
• Determine the operation.
• If the country is located in the east, add the time difference to the time in the country.
• If the country is located in the west, subtract the time difference from the time in the country.

QUESTION 1
According to the diagram above, what is the time in Kuala Lumpur if the time in London is 3.00 p.m. ?

• Kuala Lumpur is in the east. The time difference is 8 hours.
• Therefore, add 8 hours to the time in London.
• The time in Kuala Lumpur = 3:00 p.m. + 8 hours
                                                  = 1500 hours + 0800 hours
                                                  = 2300 hours
•  The time in Kuala Lumpur is 2300 hours or 11:00 p.m..

QUESTION 2
According to the same diagram above, state the date and time in Kuala Lumpur if the time in Osaka is 0030 hours on 31 March 2017.

• Malaysia is located to the west of Osaka.
• The time difference is 1 hour.
• Therefore, subtract 1 hour from the time in Osaka.
• The time in Malaysia is 2330 hours or 11:30 p.m. on 30 March 2017.