Is Yoon Bomi Older Than Jung Eunji? Both Were Born in 1993, but Their Birthdays Are 5 Days Apart
Yoon Bomi and Jung Eunji were both born in 1993, so they are generally considered the same age. Yoon Bomi was born on 1993-08-13 and Jung Eunji on August 18, meaning Bomi was born exactly 5 days earlier. However, because they share the same birth year, their birthday order alone does not determine whether one is considered the older or younger member.
In episode 414 of MBC's 'The Manager,' Jung Eunji was described as the group's 'secret disciplinarian' who used to keep an eye on the members' behavior and clothing. This naturally raises questions such as, 'Is Jung Eunji one of the older members of Apink?' and 'Who is older, Yoon Bomi or Jung Eunji?' The episode aired on 2026-09-05.
Yoon Bomi Was Actually Born 5 Days Before Jung Eunji
Comparing their dates of birth, Yoon Bomi was born first.
Yoon Bomi was born on 1993-08-13, while Jung Eunji was born on 1993-08-18. The difference between their birth dates is 5 days. As of 2026-09-06, both have already celebrated their birthdays this year, making them 33 years old in international age.
In other words, if the question is simply 'Who was born first?' the answer is Yoon Bomi.
However, in Korea, the terms people of similar ages use to address one another are often not determined solely by who was born a few days earlier. When two people were born in the same year, such as 1993, it is generally natural to regard them as the same age.
Why Was Jung Eunji Called the 'Disciplinarian'?
The term 'disciplinarian' was not used to suggest that Jung Eunji was the oldest member.
In MBC's official description of episode 414, the members recalled how Jung Eunji used to pay close attention to their behavior and clothing. This led to the description 'Jung Eunji, the secret disciplinarian.' Therefore, the term used on the show was more of a humorous reference to Eunji's personality and role within the group at the time than to her position in the age hierarchy.
The oldest member of Apink is Park Chorong, who was born on 1991-03-03. Yoon Bomi and Jung Eunji were both born in 1993, placing them in the next age group.
Therefore, it would be incorrect to conclude that 'Jung Eunji was the disciplinarian, so she must be older than Yoon Bomi.'
Yoon Bomi and Jung Eunji Belong to the Same '93 Line' in Apink
Yoon Bomi and Jung Eunji were both born in 1993, with their birthdays just five days apart.
In particular, both were born in August, making their birthdays especially close. Yoon Bomi's birthday is August 13, while Jung Eunji's is August 18, meaning Eunji's birthday falls exactly 5 days after Bomi's.
This is why people checking the members' ages may wonder, 'Is Yoon Bomi the older one?' The important distinction is that Bomi's birthday comes first, but both were born in the same year.
The actual terms of address used by celebrities or idol group members can be influenced by several factors, including personal relationships, the group's internal culture, school-year differences, and Korean conventions surrounding people born early in the year. Therefore, it is more accurate not to assume how they address each other based solely on their birth dates.
Why They Appear to Be the Same Age in 2026
International age changes on a person's birthday, so even people born in the same year can temporarily have different ages displayed during certain periods.
For example, every year from August 13 through August 17, Yoon Bomi has already celebrated her birthday while Jung Eunji has not. During this period, Bomi's international age is displayed as 1 year higher than Eunji's. However, once Jung Eunji's birthday on August 18 passes, their international ages become the same again.
In 2026, Yoon Bomi turned 33 on August 13, while Jung Eunji turned 33 on August 18. Therefore, as of the current reference date, both are 33 years old.
When checking international ages on celebrity profiles, it is important to consider not only the birth year but also whether the person's birthday has already passed that year.
How This Connects to Apink Members Gathering for Jung Eunji's Birthday Party
Episode 414 of 'The Manager' featured Park Chorong, Yoon Bomi, Kim Namjoo, and Oh Hayoung gathering to celebrate Jung Eunji's birthday. According to the program's description, the occasion naturally turned into a series of playful revelations about the members' past experiences during their 15 years together.
Yoon Bomi is also a member whose birthday falls just five days before Jung Eunji's.
That is why looking up their profiles together can easily lead to questions such as, 'They were both born in 1993, so who is older?' and 'Why was Jung Eunji the disciplinarian?' The conclusion is straightforward. Yoon Bomi was born 5 days earlier, but both were born in 1993. The term 'disciplinarian' used on the show referred not to age-based seniority but to Jung Eunji's behavior and role within the group at the time.
Key Points at a Glance
Yoon Bomi was born on 1993-08-13, and Jung Eunji was born on 1993-08-18, making Bomi 5 days older. However, because both were born in 1993, it would be difficult to conclude that they have a conventional older-sister and younger-sister relationship based solely on their birthday difference.
Jung Eunji was also not described as the 'secret disciplinarian' because she was older. The expression came from the members' recollections of how carefully she monitored their behavior and clothing during Apink's early years.