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Calendar Questions and Answers
Calendar Questions
Definition of Calendar
Basically there are 365 days in an ordinary year, which means 52*7+1 day or 52 weeks plus one day per year. This concept is applicable only for years excluding the leap year.
Concept of Odd days:
Whenever we are asked to find out a day of the week on a specific date, we use the concept of ‘odd days’
Odd days may be defined as the number of days more than whole weeks.
Leap Year:
If it is not a century, then each year divided by four is a leap year. One point also to be noted here is that leap year comes in every 4’th century.
Formula or Rule for solving CALENDAR questions
- 100 years give us 5 odd days
- 200 years give us 5 x 2 = 10 – 7 (one week) 3 odd days.
- 300 years have 5 x 3 = 15 – 14 (two weeks) 1 odd day.
- 400 years have {5 x 4 + 1 (leap century)} – 21} (three weeks) 0 odd days.
- January has 31 – 28 = 3 odd days.
- February has 28 – 28 = 0 odd day in a typical year and 1 odd day in a leap year and so on for all the other months.