Month + 中旬
The noun 中旬 (zhōngxún) means 'mid-month,' referring to the middle ten days of a month (approximately the 11th to the 20th). Chinese divides each month into three periods: 上旬 (early), 中旬 (middle), and 下旬 (late). It is placed after the month, as in 六月中旬 (mid-June).
会议定在十月中旬召开。
Huìyì dìng zài shíyuè zhōngxún zhàokāi.
The meeting is scheduled to be held in mid-October.
樱花通常在三月中旬开放。
Yīnghuā tōngcháng zài sānyuè zhōngxún kāifàng.
Cherry blossoms usually bloom in mid-March.
我们计划七月中旬搬进新房子。
Wǒmen jìhuà qīyuè zhōngxún bān jìn xīn fángzi.
We plan to move into the new house in mid-July.