Find a day

With this application you can know the name of a day with specefic date of any year between (1901 - 2099)
and you can see the calendar of the same year
there are to types of years :
- Leap year : Februaray 29 days like : 2000 ; 2004 ....
- Common year : Februaray 28 days : 2001 ; 2003 ....
So if you write , for example : 30 / 2 / 2000 (a leap year ) or 29 / 2 / 1973 (a common year ) you will see a notification told you to choose a valid number ; that's mean : 29 / 2 / 2000 and 28 / 2 /1973
Informations :
- A common year : " year is not divisible by 4" or " year is not divisible by 400 "
- A leap year : " year is divisible by 4 " or " year is divisible by 400 "