# Reading and Interpreting a Calendar

In reading and interpreting a calendar we need to know days in a week, days in a month and months in a year.

Time is not only measured by days, hours and minutes, but also by months, weeks and years. A calendar of a year shows 12 months. February has 28 days normally. In a leap year it has 29 days.

A month has few weeks. A week has 7 days. They are – Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.

There are 7 days in a week. The first day of the week is Sunday.

The seven days of a week are:

(i) Sunday

(ii) Monday

(iii) Tuesday

(iv) Wednesday

(v) Thursday

(vi) Friday

(vii) Saturday

We also know that there are 12 months in a year. The first month of the year is January.

The 12 months of the year are:

(i) January

(ii) February

(iii) March

(iv) April

(v) May

(vi) June

(vii) July

(viii) August

(ix) September

(x) October

(xi) November

(xii) December

All the months have different numbers of days.

These are the number of days each month has:

(i) January = 31 days

(ii) February = 28/29 days

(iii) March = 31 days

(iv) April = 30 days

(v) May = 31 days

(vi) June = 30 days

(vii) July = 31 days

(viii) August = 31 days

(ix) September = 30 days

(x) October = 31 days

(xi) November = 30 days

(xii) December = 31 days

Thus 7 months have 31 days each; 4 months have 30 days each, only the month of February has 28 days ordinarily. But in a leap year, the month of February has 29 days.

In an ordinary year, the numbers of days are

(7 x 31) + (4 x 30) + (1 x 28)

= 217 + 120 + 28

= 365 days.

But a leap year (in which February is of 29 days) has 217 + 120 + 29 = 366 days.

To remember the number of days in different months, we may remember the following rhyme:

“Thirty days have September, April, June and November.

February alone has twenty eight, all the rest have thirty one.

But leap year coming once in four, February has one day more."

A year which is divisible by 4 is a leap year. As, 1988, 1992, 1996, 2000, 2004 all are divisible by 4, so these are leap years.

A leap year has 366 days and the month of February is of 29 days in such a year.

The calendar of a year shows all the above mentioned facts. We may gather different information with the help of a calendar.

Here is a Calendar for 2011.

We can count the number of days between the given two dates. We include the starting day and the last day in our calculation.

For Example:

1. How many days are there from 5th March to 12th April?

Solution:

Let us count the number of days from the given date.

Number of days in March = 31 – 4

= 27 days

Number of days in April = 12

Total number of days = 27 + 12

= 39 days

2. Shelly went on vacation from 15th April for 20 days. On what date will she return to work?

Solution:

Number of days remaining in April = 30 – 14

= 16 days

Number of holidays left = 20 – 16 = 4 days

4 days after 30th April is 4th May

Questions and answers on Interpreting a Calendar:

I. Fill in the blanks:

(i) Number of months in a year ……………….

(ii) Number of minutes in a week ……………….

(iii) Number of weeks in a year ……………….

(iv) Number of weeks and days in 45 days ……………….

(v) Number of hours in a week ……………….

(vi) Number of weeks and days in 70 days ……………….

I. (i) 12

(ii) 10080 minutes

(iii) 52

(iv) 6 weeks 3 days

(v) 168

(vi) 10 weeks

1. What is the date, twelve days after twentieth of September?

2. If 7 August, 2018 was a Tuesday, what was the day on 30 July, 2018?

3. Harry’s summer vacations are starting from 2nd June. The school will open after 4 weeks 5 days. On which date is his school reopening?

4. How many months have 30 days? Name them.

5. Ron was on leave from 17 August to 4 September. Find the number of days Ron was on leave.

6. How many days are there from 25 March to 14 May?

7. How many days are there from 28 December to 3 February?

II. 1. 2nd October

2. Monday

3. 4th July

4. 4, April, June, September and November

5. 19 days

6. 51

7. 38

III. Observe the month of August and answer the following question

(i) How many days are there in this month?

(ii) How many Wednesdays are there in this month? Mention the dates.

(iii) Which day is on 28th of this month?

(iv) 3rd Monday is on which date?

(v) Write the date of 1st of this month?

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