学校在一月一日放假。

The school is closed on January 1st.

我们在一月一日庆祝新年。

We celebrate the new year on January 1st.

我们计划在一月一日去旅行。

We plan to go on a trip on January 1st.

申报书可在一月一日到四月十五日之间任何时候寄交税务局.

The return may be flied at any time after January I and before April 15.

在澳大利亚他们在一月一日这天庆祝新年。

In Australia they celebrate the New Year on January 1.

新年庆祝活动并非全在一月一日举行。

New Year's celebrations don't always fall on January 1.