CORTIS
South Korea · Official roster: 5 (5 birthdays recorded)
CORTIS members from oldest to youngest: JAMES (20), JUHOON (18), MARTIN (18), SEONGHYEON (17), KEONHO (17). The oldest is JAMES, born October 14, 2005; the youngest is KEONHO, born February 14, 2009.
Debut date: Next debut anniversary: August 18
Birthdays of all members
| Birthday | Member | Other spellings |
|---|---|---|
| March 20 | MARTIN 朴宇宙마틴マーティンEdwards Martin | 박우주 |
| October 14 | JAMES 趙雨凡제임스ジェームスJames Chao | — |
| January 3 | JUHOON 金主訓주훈김주훈ジュフンKim Juhoon | — |
| January 13 | SEONGHYEON 嚴成玹성현엄성현ソンヒョンEom Seonghyeon | CORTIS—嚴成玹, 严成玹 |
| February 14 | KEONHO 安乾鎬건호안건호ゴンホAn Keonho | — |
Roster source: BIGHIT MUSIC official site: CORTIS PROFILE (JS-rendered; read in a browser) (retrieved 2026-09-25)
Age ranking of members (oldest to youngest)
We have full birth dates for 5 of 5 members (members with only a birth month and day are left out, since their age can’t be calculated). Ages update to today’s date.
| Rank | Member | Birthday | Age |
|---|---|---|---|
| 1 | JAMES | October 14, 2005 | 20 |
| 2 | JUHOON | January 3, 2008 | 18 |
| 3 | MARTIN | March 20, 2008 | 18 |
| 4 | SEONGHYEON | January 13, 2009 | 17 |
| 5 | KEONHO | February 14, 2009 | 17 |
CORTIS Members’ Zodiac Signs
Only members with a known birthday are included. Sign boundaries: zodiac index
This page lists all 5 members on CORTIS’s official roster. 5 of them have their own page on this site (our inclusion rule: someone has held a support event for them, or a verifiable identity or birthday source exists). The rest are marked “roster only” and appear only in this table. Birthdays are listed only when we find a verifiable source; otherwise they’re marked “no verifiable source found.” We never fill gaps with guesses. Spotted an error, or have a verifiable official source? Email service@joelin.cc. (email us a report)
We’ve logged 1 support cases for this group’s members (the combined total of each member’s cases; see each member’s page for details).
Photo Booth Support History
We’ve logged 1 photo booth support events related to CORTIS (including members’ individual birthday support), each with an official announcement as its source.
| Run dates | Event | Subject | Brand |
|---|---|---|---|
| From January 26, 2026 Dates per official announcement | PHOTOISM × CORTIS Collaboration Photo Frame (Taiwan) | CORTIS | PHOTOISM |
Want to hold a support event for CORTIS?
Group support usually centers on debut anniversaries and concerts. Each member’s birthday is in the table above.
FAQ
- What are the birthdays of CORTIS's members?
- CORTIS’s official roster has 5 members. Those with a verifiable birthday on this site: MARTIN March 20, JAMES October 14, JUHOON January 3, SEONGHYEON January 13, KEONHO February 14. Each birthday’s source is cited on this page and on the person’s own page.
- How many CORTIS members are listed on this site?
- CORTIS: Official roster: 5. Of these, 5 have a verifiable birthday recorded on this site. This page lists all 5 members on CORTIS’s official roster. 5 of them have their own page on this site (our inclusion rule: someone has held a support event for them, or a verifiable identity or birthday source exists). The rest are marked “roster only” and appear only in this table. Birthdays are listed only when we find a verifiable source; otherwise they’re marked “no verifiable source found.” We never fill gaps with guesses. Spotted an error, or have a verifiable official source? Email service@joelin.cc.
- When was CORTIS’s debut?
- CORTIS's debut date is August 18, 2025, so every year on August 18 marks the debut anniversary. In other words, CORTIS’s debut year is 2025. The debut anniversary is one of the most common occasions for group fan support.
- What is the age order of CORTIS's members? Who is the oldest?
- We have birth years for 5 of 5 CORTIS members (members with only a birth month and day can’t be ranked by age). Ordered from oldest to youngest: JAMES (born October 14, 2005), JUHOON (born January 3, 2008), MARTIN (born March 20, 2008), SEONGHYEON (born January 13, 2009), KEONHO (born February 14, 2009). The oldest is JAMES, and the youngest is KEONHO.
- What are the zodiac signs of CORTIS’s members?
- Based on their birthdays: Libra: JAMES; Capricorn: JUHOON, SEONGHYEON; Aquarius: KEONHO; Pisces: MARTIN. Signs use the month and day only, with the boundary dates explained on our zodiac pages.
View this page in Chinese → · Back to group index · Birthday calendar