🇻🇳 Vietnamese Business Days Calculator — Subtracts Lunar Tết & Holidays
Compute business days between two dates, automatically subtracting Vietnamese lunar Tết, Hùng Vương Memorial (10/3 lunar), 30/4, 1/5, 2/9, 1/1. Built-in holiday DB for 2020-2030. Optional 'count Saturday' mode (banking / half-day-Saturday companies).
📅 All holidays in year 2026
- Tết Dương lịch (dương lịch)1/1/2026
- Tết Nguyên đán (âm lịch)2/14/2026
- Tết Nguyên đán (âm lịch)2/15/2026
- Tết Nguyên đán (âm lịch)2/16/2026
- Tết Nguyên đán (âm lịch)2/17/2026
- Tết Nguyên đán (âm lịch)2/18/2026
- Tết Nguyên đán (âm lịch)2/19/2026
- Tết Nguyên đán (âm lịch)2/20/2026
- Tết Nguyên đán (âm lịch)2/21/2026
- Tết Nguyên đán (âm lịch)2/22/2026
- Giỗ Tổ Hùng Vương (âm lịch)4/26/2026
- Giải phóng miền Nam (dương lịch)4/30/2026
- Quốc tế Lao động (dương lịch)5/1/2026
- Quốc khánh (dương lịch)9/2/2026
Why use this tool
Global tools (it-tools, codebeautify) only handle Western holidays. This subtracts Vietnamese lunar Tết accurately per year + Hùng Vương Memorial.
Lunar Tết shifts each year — DB hardcodes 2020-2030 precisely. Government holidays + observed-day shifts (Phase 2).
Default: Sunday + Saturday off. Toggle 'count Saturday' for banks / half-Saturday workplaces.
How to use
- 1Pick start → end date.
- 2Optionally toggle 'count Saturday' for companies that work Saturdays.
- 3Instantly see: total days, business days, weekends, holidays.
- 4Click the dropdown to see all holidays for that year.
Vietnamese business days — done right
Computing Vietnamese business days is harder than other countries because of the lunar Tết — 5-7 days off, solar date shifting yearly (Tết 2024 = 8-14 Feb, Tết 2025 = 25 Jan-2 Feb, Tết 2026 = 14-22 Feb). Plus Hùng Vương 10/3 lunar shifts solar dates. Solar holidays: 1/1, 30/4, 1/5, 2/9.
Use cases: HR computing timesheet deadlines, banks calculating T+2 settlement, freelancers tracking delivery, projects setting baseline end dates in contracts. Missing one Tết holiday miscalculates a whole week.
The 2020-2030 DB is sourced from official Vietnamese government and Ministry of Labor decrees. Observed-day shifts when holidays fall on Sunday will arrive in Phase 2.
- ✓Accurate lunar Tết 2020-2030
- ✓Hùng Vương Memorial per year
- ✓Solar holidays: 1/1, 30/4, 1/5, 2/9
- ✓Toggle Saturday = business day
- ✓Lists holidays in range + full year
- ✓Privacy-first 100% client-side
FAQ
Does it handle observed-day shifts when 30/4 is a Saturday?
Phase 1 only checks the exact date. Observed-day shifts follow year-specific decrees — Phase 2 will add them.
Why does Tết 2025 show 9 days?
DB matches the government's official decree per year. Tết length is set yearly by the government, can be 5-9 days plus observed-day extensions.
Can I compute years past 2030?
Not yet — lunar-solar conversion requires accurate astronomical data. As 2030 approaches, the DB will be extended.