Almost all the travel industry uses the 24 hour clock. It is used in timetables, on tickets and on all announcements at airports. As the 24 hour clock does not use a.m. and p.m., times in the morning cannot be confused with times in the evening. Four numbers are used - no spaces, and no dots or stops:

• Half past nine in the morning or 09.30 a.m. = 0930
• Twenty minutes past eight in the evening or 08.20 p.m. = 2020
• One minute past midnight = 0001

Some 24 hour clocks use 0000 as midnight, but the travel industry does not.

The exception to the 24 hour clock is in USA & Canada where timetables and tickets show a.m. and p.m. In America the 24 hour clock system is called Military Time.

Hint: Remember this when searching for information on the Internet - a website created in North America may show travel information in a.m. and p.m. If you are looking for connecting domestic flights or trains check if the site uses the 24 hour clock!