**Tricks & Concepts to Solve Calendar Problems**

Here we are providing you very easy tricks to solve calendar problems. These problems may be asked in your Railway exams or various other competitive exams.So, just have a look over the concept to solve Calendar problems

1 year = 12 months

12 months = 52 weeks

1 week = 7 days

Ordinary Year = 52 weeks + 1 odd day

Leap Year = 52 weeks + 2 odd days

Odd days are the number of days more than complete week or extra days in a year.

**What is a Leap year? **

- A particular year divisible by 4 is called leap year, also it should not be century year

For example: 1976, 1840 are leap year as they are divisible by 4

- Each fourth century is a leap year

For example: 400, 800, 1200, 1600, 2000, 2400 are leap years, but 700, 1300, 1900 are not leap years

**Counting of weeks and days in year:**

- 1 ordinary year has 365 days = 52 weeks + 1 odd day
- 1 leap year has 366 days = 52 weeks + 2 odd days
- 100 years = 76 ordinary years + 24 leap years = 76*1 + 24*2 = 124 odd days = 17 weeks + 5 odd days, Since in 100 years, number of odd days are 5
- In 200 years, number of odd days are 5*2= 10 = 1 week + 3 odd days, 3 odd days
- Similarly in 300 years 5*3 = 15 = 2 weeks + 1 odd day
- Similarly for 400 years number of odd days 5*4 + 1 = 0 odd days, from this we conclude that for 800, 1200, 1600 , 2000, 2400 years odd days will be zero

** Also, Good to read Union Railway Budget , Railway zones & Headquarters **

Also Read

**Shortcuts for Calculating Compound Interest**