semana del 26 al 30 de Abril

How to interpret and convert between times in 12 hour and 24 hour format

There are two primary methods of showing the time. First there’s the 12 hour clock that uses AM and PM, and then there’s the 24 hour clock.

Most countries prefer the 24 hour clock method, but the 12 hour clock is widely used in Latin America and English-speaking countries. In the 12 hour clock method, it is 12:00 twice a day at midnight (AM) and noon (PM).

The table below shows the conversion between the 12 hour and 24 hour clock systems:

12 hour clock

The day is split into two 12 hour periods running from midnight to noon (AM hours), and noon to midnight (PM hours).

The abbreviations AM and PM are from Latin:

• AM: ante meridiem, before midday
• PM: post meridiem, after midday

24 hour clock

The day runs from midnight to midnight and is divided into 24 hours from 0 (midnight) to 23. Time is shown in hours and minutes since midnight.

HOMEWORK

In order to review what you have learnt in class, you have to do this homework.

• Find attached one PDF’s: U.16 TIME (OBLIGATORY)
• Deadline: Monday 3^rd of May

How do you have to set up your work? 

• You can print out these documents and later, stick them in your notebook.
• If you don’t want to print them out, copy the activities in your notebook.
• Please, take care of the presentation and try to keep your notebook neat and tidy as well.
• If you have any question, please feel free to ask me.