April Fool's Day is on 1st April.

愚人节在四月一日。

youdao

Would you please book a room for 3 days, beginning from April 1st?

请您为我订一个房间，从4月1日起，住3天，好吗？

youdao

If we had a national holiday, it would be April 1st.

如果要为全国黑客选一个假日，那一定是愚人节。

youdao

He was killed on April 1st,1865,at the Battle of Five Oaks excuse me, at Five Forks, just west of Richmond, the last major engagement of the Civil War.

他最终死于1865年4月1日的五橡树战役,不好意思,是五岔口战役,就在里士满的西面,内战最后一场主要的会战

耶鲁公开课 - 美国内战与重建课程节选

Mr Brown said the latest version of the charter focussed on "16 outcomes" and he was hoping it could come in to effect by 1st April 2012.

BBC: Capital Investment Committee

There is to be a single police service from the 1st of April - and you know the foolish thing?

BBC: Back on the beat

From January 1st through April 15, it was up nearly 5%.

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