"Black Day" refers to a day of mourning or remembrance, often observed in various cultures and contexts. It can signify a tragic event, such as a natural disaster or a significant loss, prompting communities to reflect on the impact of these occurrences. The term is sometimes used in political contexts to denote a day of protest or awareness regarding social issues. In South Korea, "Black Day" specifically falls on April 14th, a day for singles to gather and commiserate over their relationship status. It follows Valentine's Day and White Day, where couples celebrate love, making "Black Day" a time for those who are single to eat jajangmyeon, a dish of noodles in black bean sauce, symbolizing their status.