What Is the Time?

• Many centuries ago, an ancient civilisation called Babylonian decided to make a minute with 60 seconds
• The number ‘60’ can be derived by multiplying many different numbers such as (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60).
• It becomes easy to tell the exact time using the 60-second minute.
• Therefore, it was decided to make a minute of 60 seconds.

Question 2:

• Our calendar system is based on the total number of days the moon takes to complete its lunar phases.
• This takes 29.5 days to complete from the new moon to the full moon and back to the new moon.
• This is not an even number; hence the whole year cannot be divided evenly.
• So, to make it easy to count the months, some months are with a day extra or less.

Question 3:

• A year is a time required to complete one revolution by Earth around the Sun.
• Earth takes 365 and 1/4th days to complete a revolution around the Sun.
• This extra 1/4th day after every four years is counted as one complete day. Hence, every 4 years, we have 1 extra day in the year that is added to February.
• Hence, in every leap year, we have 29 days in February and 366 days in the year instead of 365,