18 maggio 2664

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

18 maggio 2664 is the 139^th day of the year 2664 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 2664 will be from 19 febbraio to 4 marzo,
Muslim New Year - 12 novembre,
Jewish New Year, or Rosh Hashanah - from 13 settembre to 14 settembre.