Time and Calendar
Category : 1st Class
Time and Calendar
Concept of Time
A day is divided into hours. An hour is divided into minutes and a minute is divided into seconds. See the following examples:
For example, Leesa reaches school on 8 O'clock every day. Here 8 O'clock is the time
Hours, Minutes and Seconds
Hours, minutes and seconds are units for the measurement of time.
For example, we can say
2 hours; 2 minutes; 2 seconds.
Now just remember:
24 hours = 1 day
1 hour = 60 minutes
1 minute = 60 seconds
Hence 1 day = 24 hours
Knowing Time
Knowing time means knowing period or duration of a certain event.
For example,
A man goes to a certain distance in 60 minutes. We can therefore say that he takes 1 hour to cover the certain distance.
Time Indicating Watches
Let's see the face of a clock given below:
CLOCK
Look carefully at the clock given. It has two hands. One is the shorter hand, which is called hour hand. The other is the longer hand, which is called minute hand.
Important Points
Reading Time from a Clock
Trick 1
When the minute hand is at 12 then the actual time is the number that is indicated by the shorter or hour hand. For example, just see the following:
Example:
Here the longer or the minute hand is at 12 and hour or shorter hand indicates 9.
Therefore, the time is 9 or 9 0 ' clock.
Similarly, in the clock shown below. The time is 4 or 4 O'clock.
Trick 2
Counting of the movements of minute hand at each of the number starting from 1 to 12 is done in the unit of 5, as given below:
5, 10 , 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60
If shorter or hour hand is somewhere between 2 and 1 and minute hand is at 5 then the time is 2 : 25 and it will be read as ‘25’ minutes past 2.
The above clock shows the time ten past five that is 10:05.
Calendar
A calendar is a system of organising various periods of time. This is done by giving names to the periods as days, weeks, months and year.
Week
A period of seven days is called a week. In other words there are seven days in a week. They are as follows:
Day 
Description 
Monday 
Monday is called the first day of the week. 
Tuesday 
Tuesday is called the second day of the week. 
Wednesday 
Wednesday is called the third day of the week. 
Thursday 
Thursday is called the fourth day of the week. 
Friday 
Friday is called the fifth day of the week. 
Saturday 
Saturday is called the sixth day of the week. 
Sunday 
Sunday is called the seventh day of the week. 
Months in a Year
There are 12 months in a year. They are as follows:

Months 
Number of Days 
Description 
1. 
January 
31 
It is the first month of the year. 
2. 
February 
28/29 
It is the second month of the year 
3. 
March 
31 
It is the third month of the year 
4. 
April 
30 
It is fourth month of the year 
5. 
May 
31 
It is fifth month of the year 
6. 
June 
30 
It is six month of the year 
7. 
July 
31 
It is seven month of the year 
8. 
August 
31 
It is eight month of the year 
9. 
September 
30 
It is nine month of the year 
10. 
October 
31 
It is tenth month of the year 
11. 
November 
30 
It is eleventh month of the year 
12. 
December 
31 
It is the last month of the year. 
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