Calendars

A calendar is systematic arrangements of days and dates in a month and arrangements of months in a year. A calendar is a chart or set of pages that lists the days and months of a year, in an organised way.

The calendar is divided into 12 months of the year. In short Calender is a means to keep a count of time, building a relation of days with dates.

Here, we will learn how to read calendars and counting the number of days in a calendar.

Calendar

Reading a Calendar

To read a calendar we must know the structure of the calendar and time divided into different units. A year is divided into 12 months which goes by names:

“January, February, March, April, May, June, July, August, September, October, November, December”.

Each month is further divided into approximately 4 weeks, where each week consists of 7 days which go by name:

“Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday”.

Uses of Calendar

The calendar helps us to track the current date , day or month or even a year. It also helps to know on which day an event has fallen in the previous year or on which day a particular event is gonna occur.

We can say we use Calendar for :

1. Planning the daily activities.

2. Keeping the track of events.

3. Remembering the important dates.

4. Managing the daily routine or Schedule.

Counting Days

In the task of counting days  we must be aware of certain facts. Note that each month has 30 days or 31 days , except for the second month it has 28 days and every once in 4 years called leap year it will have 29 days.

Trick to find 30 0r 31 days in a month with a Rhyme:

30 days has September, April, June, and November. When short February's done All the rest have 31...

Counting Number of Days

Months in Numbers	Name of the Months	Number of Days
1	January	31
2	February	(28 days and 29 days in leap year)
3	March	31
4	April	30
5	May	31
6	June	30
7	July	31
8	August	31
9	September	30
10	October	31
11	November	30
12	December	31

Months with 30 Days

November, April, June, and September are the months with 30 days , February has 28 days (29 days in the leap year) and all the remaining months have 31 days.

Leap Year

A leap year is the calendar year that consists of an additional day in the month of February ( February has 29 days in the leap year). It occurs every four year.  A year has 365 days and 6 hours, which is the amount of time taken by earth to complete one full orbit( rotation) around the sun.

These 6 hours are not taken into consideration as 6 hours are too small compared to 365 days and hence every 4 year (6 x 4 = 24) accounts for a day added in the month of February  and hence leap year accounts for 29 days in February.

Rules for Determining the Leap Year

First, a year has to be divisible by 4. 2004, 2008, and 2012 were all leap years because 2004, 2008, and 2012 are all divisible by 4.

Secondly, years that mark the end of a century are not leap years, except those years which are divisible by 400.  For example 1900 was not a leap year as it is not divisible by 400  but 2000 was a leap year (the number 2000 is divisible by 400).