Calendars are one of the important aspects of government entrance exams. The point "schedule" falls under the classification of consistent thinking as it includes a ton of sensible conversation and examination. One can definitely expect 2 to 4 problems in various government and bank exam question papers.
What is the Calendar?
A calendar is a chart or series of pages that show the days, weeks, and months of a particular year or provide specific seasonal information.
Below is a list of items in the Calendar section:
1. The basic structure of the calendar, and the concept of an odd day.
2. Decoded days of the week.
3. Leap year evaluation.
4. An evaluation of odd days in a century.
5. Type 1: Problems: Finding another given day.
6. Type 2 : Problems: Finding a day where another day is not given.
7. Type 3 : Problems: Matching one month calendars.
8. To explore various SBI exams, check the linked article.
Basic Construction of a Schedule
1. Common Year: 365 days is called a common year. Eg: 1879, 2009, 2019, etc.
2. Leap Year:- A year with 366 days is called by as leap year. Eg: 2012, 2016 2020 etc.
3. Dividing 365 by 7 gives a quotient of 52 and a remainder of 1, indicating that a normal year has 52 weeks and one extra day. This extra day is referred to as an, 'odd day' in the calendar elements.
4. A leap year has 366 days, 366 divided by 7 gives quotient 52 and remainder 2. This means that a leap year has 52 weeks plus 2 extra days. These two extra days are also referred to as, the 'odd days'.
A normal year has one odd day, while a leap year has two odd days.
To know more about SBI Clerk Syllabus, check the linked article.
Concept of the odd day
- number of odd days in every months
January has 31 days regardless of whether it is a common year or a leap year. Number 31 divided by 7 gives a remainder of 3 so January has 3 odd days. In normalization, any month with 31 days has 3 odd days and any month with 30 days has 2 odd days.
Exception is made only in case of February. In a normal year the month of February has 28 days, 28 divided by 7 leaves a remainder of zero. Therefore, the number of odd days in February in a normal year has 0 odd days and in a leap year it has 1 odd day as February has 29 days.
The table below depicts the number of odd days in different months of the calendar year:
|
MONTHS
|
NUMBER OF ODD DAYS |
|
January |
3 |
|
February
|
0/1 |
|
MARCH
|
3 |
|
APRIL
|
2 |
|
MAY
|
3 |
|
JUNE
|
2 |
|
JULY
|
3 |
|
August
|
3 |
|
September
|
2 |
|
October
|
3 |
|
November
|
2 |
|
December
|
3 |
Table:- List of number of odd days every months
The days of the week are coded by, as follows:
|
Day CODE |
Day
|
|
0
|
Sunday |
|
1
|
Monday |
|
2
|
Tuesday |
|
3
|
Wednesday |
|
4
|
Thursday |
|
5
|
Friday |
|
6
|
Saturday |
Table: The corresponding codes of the day of week
This table helps in decoding the answers obtained at the end of the problem solving process in the calendar topics wise.
Eg: If the value obtained in the last step of calculation is 10, then the number 10 is divided by 7 (as we have 7 days in a week) and the remaining 3 lists are decoded to select the correct options from the given 3. Here the remaining 3 indicate that the correct answer is Wednesday.
Example 1:
Today is Monday. After 61 days, it will be:
A. Tuesday B. Wednesday
C. Thursday D. Saturday
Explain:
- Each day of the week is repeated after 7 (seven) days. So after 63 days it will be on Monday. After 61 days it will be on Saturday.
👉 click here Solve the complex calendar questions.
FAQ:
Q1: How to solve questions based on calendar?
- Conclusion
1. We use the Gregorian calendar.
2. In solving a calendar problem, first, check whether the year is a leap year.
3. A leap year is divisible by 4; It can be easily identified.
4. A year has 2 weeks and 7 days in a week.
5. A normal year has one odd day and a leap year has two odd days.
Q2;- What is the calendar trick?
- Tricks: There are 5 odd days in 100 years. 200 years, 5 x 2 =then 10 – 7 (one week) = 3 odd days,. 300 years 5 x 3 = then 15 – 14 (2 weeks) = 1 odd day. in 400 years, {5 x 4 + 1 (leap century)} – 21} (3 weeks) = 0 , odd days.
Q3: What is the formula of calendar?
- Count the number of days in each year, month and remaining days to calculate the total period between two dates. Use the formula: day = (reference day + number of days) % 7, where the reference day is the known day and the period to which the number of days is added.
Q4: క్యాలెండర్ ట్రిక్ అంటే ఏమిటి?
- ఉపాయాలు: 100 సంవత్సరాలలో 5 బేసి రోజులు ఉంటాయి. 200 సంవత్సరాలు 5 x 2 = 10 – 7 (ఒక వారం) = 3 బేసి రోజులు. 300 సంవత్సరాలు 5 x 3 = 15 – 14 ((2),రెండు వారాలు) = 1 బేసి రోజు. 400 సంవత్సరాలు {5 x 4 + 1 (లీప్ సెంచరీ)} – 21} (మూడు వారాలు) = 0 బేసి రోజులు.
Q5: What is the logic of calendar?
- It is based on a 19 yrs, metonic cycle, a 28 yrs 'solar cycle' and a 15 yrs indexical cycle. A period called, solar cycle, the days of a seven-day week repeat on the same dates.
Q6: How to find day by date trick?
- Take the last two digits ,of the year Add to that one-fourth of those two digits (dispose of any remaining portion). Add to that the day of the month and the Month Key number for that month: Read Straightaway.... Partition the aggregate by 7. The rest of the day, of the week!.
