Aptitude - Calendar - Discussion

First day of any century eg 21 century is 01/01/2001 and not 01/01/2000 and first day of century can start either Monday Tuesday Thursday and Saturday.

Thus last day of century can be Sunday Monday Wednesday and Friday as explained by many which I agree.

But first day of 1stcentury century 01/01/0001 or 1st day of AD1 is a Sunday is that an exception? And the one who need why 100? Is not a leap year here it goes?

Actually a year contains 365.24237 days thus to make up 365.25 first we have one day extra after every forth year to make up the average then to make it. 01 less we do not have multiple of 100 as leap year so average bounces to 365.24 now to make more precise or to make 365.2425 we have then every multiple of 4000 as a leap year.

We can even make it more precise by not having leap year on 4000 otherwise we end up with one day advance by 8000 years but that is not done cause earths revolution speed or say velocity is decreasing it is descending but with a very slow rate which will make greater effect by then.

Why 100 is not a leap year? please explain.

Because 100 is not divisible by 400. If Every century year is divisible by 400 it means it is not leap year if it can't divisible by 400 it is a leap year.

Why 100 is not a leap year?

I can't understand, please explain it easily.

How can I found last day of the century? Please tell me I need the answer immediately.

Thank you for your explanation @Priyavel.

The first year of the first century must be a leap year. So the first century contains 25 leap years.

Not each 100 years contain 24 leap year and 76 ordinary years.

For example: 1900-2000 contain 25 leap year and 75 ordinary years.

How Come 500 - 5 odd days?

Explain in detail.