The south-west monsoon begins at the end of May and blows until August or so, making life much harder for pirates.

五月底至八月左右，会持续吹起印度洋的西南季风，不利于海盗谋生。

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So, the Commune begins on the 18th of March, 1871, and it lasts until the end of May, 1871. Lenin once called it the "Festival of the Oppressed"; and Lenin was wrong about many things, he was right about a few things but wrong about many, but he got that one right.

由此,巴黎公社在一八七一年三月十八日成立,并于同年的五月底被政府所瓦解,列宁将这段时间称为"受压迫者的庆典",列宁做错过不少事情,他做对的事情寥寥无几,但对于巴黎公社的评价是正确的

耶鲁公开课 - 1871年后的法国课程节选

The south-west monsoon begins towards the end of May until about August, making the seas too rough for pirates.

ECONOMIST: Piracy off Somalia

It is not until the end of this stage that the buyer defines how they plan to solve their problem and begins to investigate potential solution providers.

FORBES: Influencing Your Buyer