The term "30th" typically refers to the ordinal number that indicates the position of something in a sequence, specifically the thirtieth item. It is often used in various contexts, such as dates, anniversaries, or rankings. For example, a person might celebrate their 30th birthday or a couple might mark their 30th wedding anniversary. In the context of time, the 30th day of a month can be significant, as it marks the end of the month for those with 30 days, like April or June. In sports, a team might aim to finish in the top 30 of a ranking, which can influence their eligibility for competitions or playoffs.