This is the 48th most frequent Korean word.
지난달
"Last month."
Here, '지난달' refers to the specific period of the month before the current one, used to set the temporal context for the event of starting a job.
지난달에 나는 새로운 직업을 시작했어요.
Last month, I started a new job.
In this sentence, '지난달' is used to describe a time frame characterized by frequent rain, serving as the background for the discussed weather patterns.
지난달은 비가 거의 매일 내렸어요.
Last month, it rained almost every day.
The use of '지난달' here signifies the duration during which the action of studying hard took place, emphasizing the continuous effort throughout that period.