How To Solve Clocks And Calendar Questions Quickly
Definition of Clock and Calendar
In general terms, calendar is a series or chart of pages showing the days, weeks, and months of a particular year, or gives specific seasonal information. A calendar is a system of organizing the days in a year.
A clock is an instrument to measure time. It is meeting the need to measure intervals of time.
- Read Also – Formulas to solve clocks & calendars questions
Type 1: How to Solve Calendar questions Quickly
What was the day on 10th November,1581 ?
10 November 1581 = (1580 years + Period from 1.1.1581 to 10.11.1581)
To calculate number of odd days till 1580, we need
Number of odd days in 1200 years = 0
Number of odd days in 300 years = 1
Number of odd days in 80 years = 20 leap years + 60 ordinary years = 2 odd days
Therefore, 1580 years had 0 + 1 + 2 = 3 odd days
Now, for calculating odd days for 1.1.1581 to 10.11.1581,
January (31 days) + February (28 days) + March (31 days) + (April 30 days) + May (31 days) + June (30 days) + July (31 days) + August (31 days) + September (30 days) + October (31 days) + November (10 days)= 314 days
Total number of odd days in 314 days = (314/7) = 6 odd days
Total Number of odd days corresponding to the given date = 3 + 6 = 9 days = 9/7 = 2 odd days
As per the table, on 10 November 1581 the day was Tuesday.
|Number of odd days||0||1||2||3||4||5||6|
Correct option: D
Suppose today is Monday. Now find out what will be the day after 62 days?
Each day to the week is repeated after 7 days.
Therefore, after 63 days, it will be Monday.
Which means that on 62nd day, it will be Sunday.
Correct option: A
Which year will have the same calendar as that of the year 2019?
Count the number of odd days from the year 2019 onwards to get the sum equal to 0 odd day.
|Number of Odd days||1||2||1||1||1||2||1||1||1||2||1|
Sum = 14 odd days = 0 odd days
Therefore, calendar of the year 2030 will have the same calendar as that of the year 2019.
Type 2: How to Solve Clock Questions Quickly
Calculate the angle between the two hands of a clock when the time shown by the clock is 5: 30 a.m?
D. None of the above
According to the formula
Angle = (11/2)M – 30H, where M =30, and h =5
= (11/2) x 30 – 30 x 5
= |165 – 150|, taking the mode of the values, we get
Correct Option: B
How many degrees will the minute hand move, in which the second hand moves 480 ?
In 480 seconds the minute hand will cover = 480/60 = 8°
Therefore, minute hand moves for 8° when the second hand has moved 480 .
Correct Option: B
A clock is started in the afternoon. By 10 minutes past 5, the hour hand has turned through how many degrees?
Angle traced by hour hand in 12 hrs = 360°.
Angle traced by hour hand in 5 hrs 10 min = 5*60 + 10 = 310 = 310/60 = 31/6 hrs
= 360/12 * 31/6