Business Day Calculator
Calculation Method Selection
Business Day Calculation
주말과 공휴일을 제외한 영업일 계산
Simple Day Calculation
모든 날짜를 포함한 단순 일수 계산
Select Dates to Exclude
Exclude Weekends (Sat, Sun)
토요일, 일요일 제외
Exclude Holidays
법정 공휴일 제외
Business Days Between Dates
Calculate Date After Business Days
2025 Public Holiday Preview
| Date | Day | Holiday |
|---|---|---|
| 2025-01-01 | Wed | New Year's Day (January 1) |
| 2025-01-28 ~ 01-30 | Tue-Thu | Lunar New Year Holiday (Around lunar January 1) |
| 2025-03-01 | Sat | Independence Movement Day (March 1) |
| 2025-05-05 | Mon | Children's Day (May 5) |
| 2025-05-05 | Mon | Buddha's Birthday (May 15) |
| 2025-06-06 | Fri | Memorial Day (June 6) |
| 2025-08-15 | Fri | Liberation Day (August 15) |
| 2025-10-05 ~ 10-07 | Sun-Tue | Chuseok Holiday (Around lunar August 15) |
| 2025-10-09 | Thu | Hangeul Day (October 9) |
| 2025-12-25 | Thu | Christmas (December 25) |
* Substitute holidays are subject to change according to relevant laws.
Complete Guide to Business Day Calculator
What are Business Days?
Business days refer to days when actual work takes place, meaning weekdays excluding weekends and legal holidays. They are crucially used in contracts, legal documents, and project schedules.
- •Exclude Saturdays and Sundays
- •Exclude legal holidays
- •Calculate accurate deadlines
Korean Holiday System
Korean legal holidays are determined according to the 'Regulations on Public Holidays of Administrative Offices', and a substitute holiday system is also operated.
- •National holidays and legal commemorative days
- •Automatic application of substitute holidays
- •Real-time holiday information updates
Business Day Calculator Use Cases
Business Contracts
When accurate business day calculation is needed for contract deadlines, delivery dates, payment dates, etc.
Legal Deadlines
Calculating legally binding deadlines such as lawsuit document submission, appeal deadlines
Project Management
Project scheduling, milestone setting, work duration estimation
2024 Korean Holiday Information
Regular Holidays
- • New Year's Day (January 1)
- • Lunar New Year Holiday (Around lunar January 1)
- • Independence Movement Day (March 1)
- • Children's Day (May 5)
- • Memorial Day (June 6)
- • Liberation Day (August 15)
- • Chuseok Holiday (Around lunar August 15)
- • National Foundation Day (October 3)
- • Hangeul Day (October 9)
- • Christmas (December 25)
Substitute Holiday System
Substitute holidays are designated when Lunar New Year, Chuseok, or Children's Day overlap with weekends.
- • When holidays overlap with weekends
- • When holidays overlap with each other
- • The next weekday becomes a substitute holiday
Frequently Asked Questions (FAQ)
Q: Is the business day calculation accurate?
Yes, we calculate accurate business days by querying official holiday information from the Public Data Portal in real-time. Substitute holidays and temporary holidays are automatically reflected.
Q: Are business hours also considered?
Currently, we only calculate by date and do not consider business hours. Generally, business days are based on 9 AM to 6 PM.
Q: Are international holidays also applied?
Currently, only Korean holidays are supported. For international business, please check the holidays of the other country separately.
Q: How often is holiday information updated?
Holiday information is updated in real-time according to official government announcements. Temporary holidays are also reflected immediately when designated.
Business Day Calculation Tips
Tips for Accurate Calculation
- • Set start and end dates clearly
- • Holiday periods with substitute holidays are automatically reflected
- • Accurate calculation even when years change for long periods
Effective Usage Methods
- • Set deadlines with buffer time for important contracts
- • Consider holidays of other countries for international transactions
- • Plan project schedules including buffers
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