在10月31日的晚上用英语怎么说

在10月31号的晚上
On the evening of October 31st.
在具体的哪天晚上用介词on。

on the night of Oct.31st

on the night of 31st October.

31日用31st
thirty-first,取最后两个字母st

in the eveing on Oct 31st.

早晚用in，具体日子用on

at the night of oct.31th

on the evening of Octorber (the) thirty-first

on the evening of 31st October.
满意吧。