Upon the creation of the new holiday, the dates of March 3 and April 1 (the beginning of the fiscal year) were proposed, but in the end, May 5 of the Tango no sekku (literally, the first day of the Horse month) was selected as the holiday (Children's Day).
祝日制定にあたり3月3日の案や、年度の4月1日の案も出ていたが、最終的には5月5日の端午の節句を祝日（こどもの日）とする案が採用された。