Detailed Instructions: In this task, given a sentence in the Chinese language, your task is to convert it into the English language.
Problem:1939年以前，每年从4月的第一个星期日（1932年5月22日）上午00：00和10月的第一个星期日上午01：00（当地时间）开始实行。
Solution:
Until 1939 this worked yearly from the first Sunday of April (in 1932: 22 May) 00:00 AM and the first Sunday of October 01:00 AM (local time).