It was a time for mourning and lamentation.

这是一个沉痛悼念的时刻。

《柯林斯英汉双解大词典》

Solnal is a time for Koreans to celebrate the traditions with their family.

索尔纳尔是韩国人与家人一起庆祝传统的节日。

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Above all, Thanksgiving Day is a time for remembrance and for giving thanks.

最重要的是，感恩节是一个追思纪念和表达感谢的日子。

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This is a time for calling attention to the value of mentoring.

VOA: special.2011.01.27

And the Aristotelian view held for a long time, but eventually it started to crumble in the light of more data.

而亚里士多德的观点在很长时间里得到了认同，但最终还是崩溃了,在越来越多的数据面前。

麻省理工公开课 - 固态化学导论课程节选

For example, let's pretend that you are speaking with a friend who had been studying for a test for some time.

例如，我们假设你跟一位朋友在聊天，他已经为一门考试复习了好一段时间。

I'm sure 课堂 - SpeakingMax英语口语达人

In fact, if there ever was a time for Vision Week, it was now.

FORBES: Magazine Article

It was a time for looking forward, but also for nostalgia for lifelong Bluebirds.

BBC: Bluebirds fly high at House of Lords reception

Picking up also on your comment about it's not a time for retribution, but reflection.

WHITEHOUSE: White House Press Briefing