Time Class 2 Notes EVS

How Do We Define Time?

Time, marked by the past, present, and future, is essential for understanding the flow of events. With units like seconds, minutes, hours, days, weeks, months, and years, clocks help us measure and organize our activities. It serves as a crucial tool for scheduling, planning, and coordinating our daily lives.

Day and Night 

The Earth is like a big ball floating in space. It gets light from the sun, which makes it bright and sunny on one side. This bright side is called daytime. But on the other side of the Earth, it's dark because it's not facing the sun. This dark side is called nighttime.

• When the sun comes up and makes everything bright, we call it sunrise. It's the start of a new day! 
• And when the sun goes down, and it starts getting dark, that's called sunset. It means the day is ending, and nighttime is coming.

It's a circle – daytime, then nighttime, and then daytime again. And this circle keeps going around and around as the Earth spins. Cool, right?

What is a Clock?

A clock is used to measure time. A clock has two hands— the short hand called the hour hand and the long hand called the minute hand.

• An hour (h) and minute (min) are the standard units for the measurement of time.
• The hour hand shows the hour and the minute hand shows the minutes before and after the hour.
  
• When the minute hand moves all the way round the clock, i.e., from 12 to 12, an hour passes.

60 minutes = 1 hour  
1 day = 24 hours

What is a Calendar?

A calendar is a system used to organize and record time, typically based on the cycles of the Earth's movements, such as the rotation of the Earth on its axis and its orbit around the Sun.

• Calendars help us keep track of days, weeks, months, and years, allowing us to plan and schedule events, religious observances, agricultural activities, and more. 
• Calendar is a table showing the days, weeks and months of a year. 
• It displays all the dates and days of the week. There are 7 days in a week.

Days of Week in Order:

• Monday is the first day of the week and Sunday is the last day of the week.
• There are 12 months in a year.
• There are 365 days in an ordinary year and the month of February has 28 days. But every fourth year, February has 29 days and the year has 366 days. It is called a leap year.
• The calendar given below shows the months of the year in order:

Months of the Calendar

• Months are also identified by their position in the year
• All the months do not have equal number of days. Some have 30, some have 31 and one month has even less.

  
  

Month having 28 or 29 days is February

Writing a Date

We can see from this example that 15^th January 2024 falls on Monday.

A date is written in the following ways:

• Date/month/year e.g. 15/01/2024                                Or
• Date-month-year e.g. 15-01-2024                                Or
• Date month' year e.g. 15+th January' 2024

Now try writing your birth date in your notebook using different formats.

READING A CALENDAR