推荐回答（3个）
英文资料：April fools' day is also called all fool's day, is the western social traditional folk festival, every year at the feast on April 1,. April fool's day and Roman a music festival and India's joy festival have similarities. From the time the choice of look and \"vernal equinox\" (March 21) about, because this period of weather often suddenly change, as same as is the nature of human in the fool. This day, people in many ways people around to open a joke, but the night can only open till 12:00, this is DE facto strict rules.
中文：愚人节也称万愚节，是西方社会民间传统节日，节期在每年4月1日。愚人节与古罗马的嬉乐节和印度的欢悦节有相似之处。从时间的选择上看与“春分”（3月21日）有关，因为这期间天气常常突然变化，恰似是大自然在愚弄人类。这一天，人们以多种方式开周围的人的玩笑，但最晚只能开到中午12点，这是约定俗成的严格规矩。
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