18 maggio 1904

• Flag and Universities' Day (Haiti)
  18 maggio
• International Museum Day
  18 maggio

18 maggio 1904 is the 139^th day of the year 1904 in the Gregorian calendar.
The day of the week is Wednesday. There are 227 days remaining until the end of this year.
Chinese New Year 1904 will be from 16 febbraio to 1 marzo,
Muslim New Year - 19 marzo,
Jewish New Year, or Rosh Hashanah - from 10 settembre to 11 settembre.