This is the 4088th most frequent Chinese word.
十五日
"十五日" means "the fifteenth day."
Here, '十五日' refers to a specific date within the next month, indicating a planned schedule.
我们将于下个月十五日开会。
We will have a meeting on the 15th of next month.
In this sentence, '十五日' specifies the day of the month in a calendar date format.
今天是五月十五日。
Today is May 15th.
In this context, '十五日' denotes a recurring date each month designated for a routine activity.