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leap Year

A year with 366 days is called a leap year.
1
The Earth actually takes 365 days to go
4
around the sun. It means a year actually
1
has 365 days but for our convenience
4
we take only 365 days. After every 4 years,
1 1 1 1
we add + + + = 1 day to the year,
4 4 4 4
thus making it 366 days. In a leap year,

February has 29 days.

Note that a year will be a leap year if it is divisible by 4 but not by 100. If a year is

divisible by 4 and by 100, it is not a leap year unless it is also divisible by 400.

Calculating days

While calculating days, we need to remember the number of days in the particular

month.

Tips

Do you have any problem remembering the number Jan Mar May July Aug Oct Dec
of days in a month? Feb Apr June Sep Nov

Here is a trick.
• Fold your hands as shown.

• All the knuckles show the months with 31 days.
• The others (except February) have 30 days.

example 1. How many days are there between 20th January and 28th February?

Solution. January has 31 days and February has 28 days.
Here, we
So, 20th January to 31st January = 31 – 20 = 11 days include the

and 1st February to 28th February = 28 days last day.

So, the total number of days between 20th January and 28th February

= 11 + 28 = 39 days.

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Time