The day was known as Marine Memorial Day (海の記念日 umi no kinen bi?) until 1996. Communications Minister Shozo Murata designated the day in 1941 to commemorate the Meiji Emperor and his 1876 voyage in the Meiji-Maru, an iron steamship constructed in Scotland in 1874.[3] The voyage included a trip around the Tōhoku region, embarking on a lighthouse boat in Aomori, and a brief stop in Hakodate before returning to Yokohama on July 20 of that year.[4] However, it was not designated a national holiday until 1995, when it became the first holiday in the summer months.[5]
First observed on July 20, 1996, the Happy Monday System (ハッピーマンデー制度 Happī Mandē Seido?) legislation moved the date to the third Monday of July beginning in 2003.[2]