April 4 is the 94th day of the year (95th in leap years) in the Gregorian calendar. There are 271 days remaining until the end of the year.
This date is slightly more likely to fall on a Monday, Wednesday or Saturday (58 in 400 years each) than on Thursday or Friday (57), and slightly less likely to occur on a Tuesday or Sunday (56).
On the Roman calendar, this was known as the day before the nones of April (Latin: Prid. Non. Apr.).