How to Say "I went to the swimming pool at three thirty on Saturday." in Korean?

"I went to the swimming pool at three thirty on Saturday." in Korean is 토요일 세 시 반에 수영장 갔어요. (toyoil se si bane suyeongjang gasseoyo)

토요일 (toyoil) - Saturday
아침 (achim) - Morning / Breakfast
아침 먹어요. (achim meogeoyo) - I eat breakfast.
여덟 시 (yeodeol si) - Eight o'clock
여덟 시에 아침 먹었어요. (yeodeol sie achim meogeosseoyo) - I ate breakfast at eight o'clock.
공원 (gongwon) - Park
공원 갔어요. (gongwon gasseoyo) - I went to the park.
토요일 열 시에 어디 갔어요? (toyoil yeol sie eodi gasseoyo) - Where did you go at ten o'clock on Saturday?