六一儿童节，又称为国际儿童节，是为了纪念世界儿童的节日。它的时间是每年的6月1日。这个节日起源于1949年的国际民主妇女联合会在莫斯科举行的儿童保护会议上提出的建议。1954年，联合国教科文组织宣布将6月1日定为国际儿童节。

在这一天，世界各地的儿童都会收到礼物和关爱，当地政府和社会组织也会举办各种儿童活动，例如游戏、比赛、表演等等。这个节日的目的是提高人们对儿童权益的意识，保护儿童的权益，确保他们能够健康、快乐地成长。

简单翻译：

The International Children's Day, also known as June 1st Children's Day, is a holiday to commemorate the world's children. It is celebrated on June 1st every year. This holiday originated from a proposal made at the Children's Protection Conference held by the International Democratic Women's Federation in Moscow in 1949. In 1954, the United Nations Educational, Scientific and Cultural Organization declared June 1st as the International Children's Day.

On this day, children around the world receive gifts and care, and local governments and social organizations hold various activities for children, such as games, contests, performances, and so on. The purpose of this holiday is to raise awareness of children's rights, protect their rights, and ensure that they can grow up healthy and happy.