I set off for a new adventure in Alaska on the first day of the new year.

我在新年第一天出发去阿拉斯加进行一次新的冒险。

《柯林斯英汉双解大词典》

On the first day of the Spring Festival, people hang out wearing new clothes.

在春节的第一天，人们穿着新衣服出去玩。

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On the first day of Chinese New Year, we put on new clothes and visit people.

在中国新年的第一天，我们会穿上新衣服去拜年。

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He says he invited his daughter and fifty of her friends to the studio on the first day of recording.

VOA: special.2009.06.05

I announced on the first day of class that I don't, myself, believe in the existence of a soul.

第一节课上,我就声明,本人并不相信灵魂的存在

耶鲁公开课 - 死亡课程节选

Things started to change probably on the first day of class, but not entirely-- because there's shopping period and it's such a wonderful thing-- you shop for classes.

事情也许从开课第一天就发生变化，但没有完全不同-,因为这是购物期，妙不可言的阶段-,你们选择课程。

哈佛公开课 - 幸福课课程节选

On a clear and sunny day, on the first day of school, death had come.

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Much of the Tube network was disrupted on the first day of the post-Christmas sales.

BBC: London Underground cleaners to strike over pay

Also, on the first day of each new location the Breakfast weather reports came from our marquee.

BBC: Spreading the word