Notes: Time and Calender

Table of Contents
1. What is Time?
2. Day and Night
3. Sunrise and Sunset
4. What is a Clock?
5. What is a Calendar?
6. Days of the Week
7. Months of the Year
8. How to Read a Calendar
9. Summary
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What is Time?

Time helps us know when things happen.

Clock and Calender

It can be:

• Past - things that already happened.
• Present - things happening right now.
• Future - things that will happen later.

We use clocks and calendars to keep track of time.

Day and Night 

• The Earth is like a big ball moving in space.

Rotation of earth causes Day and Night

• One side gets sunlight - that is daytime.
• The other side is dark - that is nighttime.

The Earth spins around slowly. This spinning gives us day and night.

Sunrise and Sunset

• When the Sun comes up in the morning, it is called sunrise. It is the start of a new day.
  Sunrise
• When the Sun goes down in the evening, it is called sunset. That means the day is ending, and night is beginning.

Sunset

What is a Clock?

A clock tells us the time.

Hands of Clock

It has two hands:

• The short hand is the hour hand.
• The long hand is the minute hand.

There are:

• 60 minutes in 1 hour
• 60 seconds in 1 minute
• 24 hours in a day

When the minute hand goes all the way around the clock, 1 hour has passed.

We measure time in:

• Seconds
• Minutes
• Hours
• Days
• Weeks
• Months
• Years

What is a Calendar?

A calendar is a chart that shows us days, weeks, and months of a year.It helps us:

Calender

• Plan birthdays, holidays, festivals, and school events
• Remember important dates

Days of the Week

• There are 7 days in a week:

  1. Monday

  2. Tuesday

  3. Wednesday

  4. Thursday

  5. Friday

  6. Saturday

  7. Sunday

• Monday is the first day and Sunday is the last.

Months of the Year

There are 12 months in a year.

Each month has 30 or 31 days, except February, which has:

• 28 days in most years
• 29 days in a leap year (comes every 4 years)
  

That's why:

• A normal year has 365 days
• A leap year has 366 days

Writing a Date

We write dates in different ways:
Date Writing Format

• 15/01/2024
• 15-01-2024
• 15th January 2024

Try writing your birthday in all three ways!

How to Read a Calendar

To read a calendar:
Reading a Calender

1. Find the month and year at the top
2. Look for the date (like 6)
3. Check the day it falls on (like Monday)
4. Write it like this: 06/03/2023

Summary

• Time tells us when things happen - past, present, and future.
• Day and night happen because the Earth spins.
• A clock tells us the time using hour and minute hands.
• We measure time in seconds, minutes, hours, days, weeks, months, and years.
• A calendar helps us remember days, months, and plan events.
• There are 7 days in a week and 12 months in a year.
• February has 28 or 29 days. A leap year has 366 days.
• We can write dates in different formats and read them using a calendar.