May 1st, 2020
Travelers thinking about visiting Hawaii may want to do so during the month of May. This is when the lei — Hawaii's most recognized floral adornment — is put on utmost display.
In early 1928 writer and poet Don Blanding wrote an article in a local paper suggesting that a holiday be created centered around the Hawaiian custom of making and wearing lei. It was fellow writer Grace Tower Warren who came up with the idea of a holiday on May 1 in conjunction with May Day. She is also responsible for the phrase, "May Day is Lei Day." Lei Day is now a statewide celebration througout all of Hawaii.
Source: www.gohawaii.about.com/cs/festivals/a/lei_day_hawaii.htm
