Time, Distance and Speed

Time

Time is the measurement of an instant which happens in the past, present or future, in hours and or minutes past midnight or noon.

The units of time and their abbreviations are listed below:

day    =             d

hour  =             h

minute =         min

second =         s

Note:         1 day =             24 hours

1 hour =           60 minutes

1 minute =      60 seconds

Time is stated either by using a 12- hour clock (AM/PM) or by using a 24- hour clock (hrs). The table below shows a comparison between a 12 hour and 24 hour clock, and can be useful when converting time between the two clocks.

12 Hour Clock (AM/PM)	24 Hour Clock (hrs)
12 Midnight	00:00 hrs
1:00 AM	01:00 hrs
2:00 AM	02:00 hrs
3:00 AM	03:00 hrs
4:00 AM	04:00 hrs
5:00 AM	05:00 hrs
6:00 AM	06:00 hrs
7:00 AM	07:00 hrs
8:00 AM	08:00 hrs
9:00 AM	09:00 hrs
10:00 AM	10:00 hrs
11:00 AM	11:00 hrs
12 Noon	12:00 hrs
1:00 PM	13:00 hrs
2:00 PM	14:00 hrs
3:00 PM	15:00 hrs
4:00 PM	16:00 hrs
5:00 PM	17:00 hrs
6:00 PM	18:00 hrs
7:00 PM	19:00 hrs
8:00 PM	20:00 hrs
9:00 PM	21:00 hrs
10:00 PM	22:00 hrs
11:00 PM	23:00 hrs

Below are examples of converting time from the 24-hour clock to the 12-hour clock, and from the 12-hour clock to the 24-hour clock.

Examples

The most frequently asked questions in relation to time, are on finding the time taken/time difference.

Example

Average Speed

Average speed is defined as the average distance travelled per unit of time.

Examples