The community parade in Ballard started in 1974.
What is the 17th of May?
Norwegian Constitution Day is the official National Day of Norway, celebrated on the 17th of May. Among Norwegians, the day is referred to simply as "Syttende Mai" (17th of May) or Grunnlovsdagen (The Constitution Day).
The Constitution of Norway was signed at Eidsvoll, Norway on May 17, 1814. The constitution declared Norway as an independent nation. The celebration of this day began spontaneously among students and other people in early years.