National Foundation Day
A Japanese national holiday celebrated on February 11, commemorating the legendary founding of Japan by Emperor Jimmu.
National Foundation Day is February 11th.
Ceremonies are held across the country on National Foundation Day.
国慶節 refers specifically to China's October 1st National Day, while 建国記念日 is the general term for any country's founding-anniversary holiday.
Compound of 建国 (けんこく, 'founding of a nation') + 記念日 (きねんび, 'anniversary'). The holiday was established in 1966 and first celebrated in 1967.