Welcome to Adda
Hi Arif,
Questions on Calendars are frequently asked in RRB exam. Generally, questions are asked on finding the day of the week given the exact date. For example, "If 4th March 2016 is a Sunday, what day is 15th April 2018?" To answer questions like these, one should keep a couple of points in mind -
1. If today is X, 7 days from today will also be X. Similarly, 14 days from today will also be X. In other words, all the days that are 7k days, where k is an integer, from today will be X.
2. Leap year rules : If a year is not divisible by 4 and is not a century, then it is a Leap year. Also, every century that is divisible by 400 is a Leap year. For example: 1896 is a leap year but 1900 is not a leap year.
In general, if a particular date in year Y is Sunday, then that date in the year Y+1 will be a Monday, unless it is a leap year. If it is a leap year, then that date will be a Tuesday.
