If you’ve ever found yourself checking “lịch âm hôm nay” before a family gathering, a business meeting, or a temple visit, you already know the drill. The Vietnamese lunar calendar isn’t just a cultural artifact — it shapes real decisions about when to start a project, visit a shrine, or ring in Tết. Below is a practical guide to finding today’s lunar date, understanding the zodiac elements that go with it, and using the right tools to convert any Gregorian date.

Basis: Moon cycles · Type: Lunisolar · Primary Use: Vietnam festivals · Month Length: 29.5 days avg · Sample Date: 01/05/2026 DL = 15/03/2026 AL

Quick snapshot

1Today’s Lunar Snapshot
2What’s unclear
  • Lunar dates near midnight may shift by one day depending on calculation methodology (Hong Kong Observatory)
  • City-specific sunset times affect tiết khí (solar term) alignment: Hà Nội 15:34 vs Hồ Chí Minh 15:40 (Tuyen Pham)
3Timeline signal
  • 2025: Yi-si Year of the Snake (HKO PDF calendar)
  • Chinese Lunar New Year 2026: February 17 (Bing Wu Year of the Horse) (TravelChinaGuide)
  • Tết Day 8 (Feb 24, 2026) marked as highly auspicious (Chus.vn)
4What happens next
  • Use a vạn niên tool to convert any date · Lunar year rolls over February 17, 2026
  • Giờ hoàng đạo repeats daily — track Tiger (03:00-04:59), Dragon (07:00-08:59), Snake (09:00-10:59), Monkey (15:00-16:59), Rooster (17:00-18:59), Pig (21:00-22:59)

These key data points establish the baseline for today’s Vietnamese lunar conversion.

Key data points for today’s lunar conversion
Attribute Value
Calendar Name Lịch Âm / Âm Lịch
Today Example DL 01/05/2026
Today Example AL 15/03/2026
Hours Type Hoàng đạo: Sửu (1-3h)
Zodiac Difference Cat instead of Rabbit vs Chinese (Time.now converter)
Conversion Uncertainty Up to 1 day near midnight (Hong Kong Observatory)

What is the lunar calendar date today?

The lunar calendar date changes daily based on the position of the moon, not a fixed solar cycle. Each lunar month begins on the day of the new moon, and months alternate between 29 and 30 days to keep pace with the solar year (HKO PDF calendar). For May 1, 2026, the Gregorian date corresponds to the 15th day of the 3rd lunar month — a full moon day by design.

Current dương lịch to âm lịch conversion

  • Gregorian: May 1, 2026
  • Lunar: 15th day, 3rd month
  • Can Chi day: At Hoi
  • Can Chi month: Nham Thin
  • Zodiac year: Year of the Dragon (per Vietnamese reckoning)

The 15th day of any lunar month traditionally falls on a full moon, which is why festivals like Tết Trung Nguyên (Vu Lan) and Mid-Autumn fall on the 15th of their respective months. Báo Nghệ An confirms this alignment and classifies May 1, 2026 as a Hoàng Đạo day — an auspicious window for starting new ventures or holding family events.

What to watch

The classification as Hoàng Đạo doesn’t mean every hour is equally favorable. The specific giờ hoàng đạo (auspicious hours) for today are Tiger (03:00-04:59), Dragon (07:00-08:59), Snake (09:00-10:59), Monkey (15:00-16:59), Rooster (17:00-18:59), and Pig (21:00-22:59) — six windows scattered across the day.

Giờ hoàng đạo today

  • Tiger: 03:00–04:59
  • Dragon: 07:00–08:59
  • Snake: 09:00–10:59
  • Monkey: 15:00–16:59
  • Rooster: 17:00–18:59
  • Pig: 21:00–22:59

According to Báo Nghệ An, these windows reflect how traditional Vietnamese timekeeping maps the twelve earthly branches onto a 24-hour day. The six auspicious hours today span both early morning and afternoon-evening slots, giving flexibility for scheduling meetings or ceremonies.

What is the lunar calendar for 2025?

The 2025 lunar year runs under the Yi-si designation — the Year of the Snake in the sexagenary cycle (HKO PDF calendar). This year governs traditional festivals, wedding dates, and business openings from February 1, 2025 (Lunar New Year’s Eve) through February 16, 2026 (the day before the 2026 transition).

Key dates and festivals

  • Tết Nguyên Đán 2025: Late January to early February (lunar 1st month)
  • Tết Trung Nguyên (Vu Lan): 15th of 7th lunar month — typically August
  • Tết Mid-Autumn (Trung Thu): 15th of 8th lunar month — typically September

Each festival falls on a specific lunar date, which shifts annually against the Gregorian calendar. The Hong Kong Observatory’s conversion tables (covering 1901–2100) help track these shifts accurately, though their methodology notes that calculations near midnight can produce a one-day discrepancy (Hong Kong Observatory).

Vạn niên overview

The vạn niên (10,000-year) calendar system combines lunar dates, solar terms (tiết khí), Can Chi designations, and auspicious hours into a single reference. Modern apps display these elements side-by-side: lunar date, Gregorian equivalent, zodiac year, and the day’s giờ hoàng đạo (Google Play — Vietnamese Lunar Calendar). Some apps also include hướng xuất hành (auspicious travel directions) and văn khấn (prayers) for ceremonial planning.

What is the lunar calendar for 2026?

2026 marks the transition from the Yi-si Snake year to the Bing Wu Horse year, with Chinese Lunar New Year falling on February 17, 2026 (TravelChinaGuide). The Vietnamese lunar calendar follows the same astronomical basis but may diverge slightly due to local calculation differences — the most notable being the zodiac substitution: Cat instead of Rabbit (Time.now converter).

Tết Âm lịch 2026 date

  • Lunar New Year’s Eve: February 16, 2026
  • Tết Day 1 (Mùng 1): February 17, 2026
  • Tết Day 2 (Mùng 2): February 18, 2026
  • Tết Day 3 (Mùng 3): February 19, 2026
  • Tết Day 8 (highly auspicious): February 24, 2026 (Chus.vn)

The eight-day Tết holiday spans February 17–23, 2026, with Day 8 (February 24) falling on a Tuesday classified as Hoàng Đạo — a date often selected for important family gatherings or business openings after the main holiday.

Monthly breakdown

The lunar year 2026 contains 12 regular months, with the possibility of a leap month added when the solar terms drift too far from the lunar months. Leap months occur roughly every two to three years to keep agricultural festivals aligned with seasons. Vietnamese apps like Lich+ track these adjustments automatically, displaying both the regular and leap-month versions when relevant (App Store — Lich+).

The catch

Vietnamese lunar dates may not align precisely with Chinese or Korean lunar calendars due to different meridian references and calculation methods. For travel to China or Korea during holidays, verify local lunar dates separately rather than assuming full compatibility.

When is Tết Âm lịch năm 2026?

Tết Âm lịch 2026 officially begins on February 17, the first day of the lunar new year. However, preparation rituals — giao thừa (New Year’s Eve ceremony), cleaning the household, and laying out the cúng đầu năm (first offerings) — occur on February 16. The holiday period typically runs through February 23, with some families extending celebrations to the 15th day of the first month (Rằm Tháng Giêng) in mid-March.

Lunar new year calculation

The lunar new year date depends on the winter solstice and astronomical new moon timing. The Hong Kong Observatory calculates these annually, providing Gregorian-Lunar conversion tables that serve as the authoritative reference for many Vietnamese tools (Hong Kong Observatory). The Nom Foundation tool specifically adapts these tables for Vietnamese use, allowing users to query any date range (Nomfoundation.org converter).

Related holidays

  • First full month (Rằm Tháng Giêng): Approximately March 15, 2026
  • Tết Hữu Nghị (China-Vietnam friendship): Lunar 1st month
  • Hội xuân (spring festivals): Throughout first two months

Vietnamese apps display these dates alongside the Gregorian calendar, often with color-coded indicators for public holidays and auspicious days. The Lich+ app, for example, shows side-by-side lunar and solar dates with feng shui ratings and zodiac information (App Store — Lich+).

How to view lịch âm and giờ hoàng đạo?

Three main approaches exist for checking today’s lunar date and auspicious hours: dedicated mobile apps, web-based converters, and institutional tools. Each serves a different use case — from quick daily checks to detailed annual planning.

Steps for conversion

  1. Identify your Gregorian date. Check the standard calendar for the exact day, month, and year you want to convert.
  2. Choose a conversion tool. Select from apps (Google Play or App Store), web tools, or observatory tables depending on your accuracy needs.
  3. Enter the date. Most tools accept YYYY-MM-DD format. The Tuyen Pham blog tool supports query parameters like ?date=2026-05-01 (Tuyen Pham blog).
  4. Read the lunar output. The result shows the lunar day, month, year, Can Chi designations, and giờ hoàng đạo for that specific day.
  5. Check regional variations if needed. For ceremonies requiring precise solar term timing, note city-specific adjustments — Hà Nội uses different sunset calculations than Hồ Chí Minh (Tuyen Pham blog).
The upshot

Ho Ngoc Duc’s applet (AM LICH) provides a monthly view of Gregorian-to-lunar conversions specifically calibrated for Vietnam, while the Nom Foundation tool handles individual date lookups with Vietnamese cultural context — these two cover most everyday use cases without requiring commercial apps.

Tools and vạn niên features

  • Ho Ngoc Duc applet: Monthly lunar view with Vietnamese formatting (AM LICH applet)
  • Nom Foundation converter: Specific date queries with Vietnam calibration (Nomfoundation.org converter)
  • Vietnamese Lunar Calendar 2026 app: Auspicious hours, Can Chi zodiac, solar terms (App Store)
  • Lich+ app: Side-by-side lunar/solar dates, 12 Truc system, feng shui ratings (App Store — Lich+)
  • Google Play lunar apps: Include hướng xuất hành, văn khấn, city-specific sunset times (Google Play)

The implication: these tools have largely replaced printed calendars in Vietnamese households, but the underlying data comes from the same astronomical calculations used for centuries — the shift is in access speed, not accuracy principles.

Bottom line: Tourists and expatriates relying on Vietnamese lunar calendar apps can check any date near Tết or major festivals by using dedicated converters, while locals can continue using familiar apps that display giờ hoàng đạo alongside standard calendar information to schedule important events.

“Today, Friday, May 1st, 2026 (Gregorian calendar), which is the 15th day of the 3rd lunar month… is an auspicious day.”

Báo Nghệ An, News Publisher

“The lunar calendar on March 15th is prone to good luck.”

Lao Dong Newspaper, News Publisher

Related reading: Thank You in Vietnamese – Pronunciation, Etiquette and Phrases · Public Holidays NZ 2024 – Dates Pay Rules Guide

For specific dates like 23/4/2026, lunar details for 23/4/2026 offers essential giờ hoàng đạo and good-bad day analysis alongside vạn niên insights.

Frequently asked questions

Why use lunar calendar in Vietnam?

The lunar calendar determines traditional festival dates (Tết, Mid-Autumn, Vu Lan), wedding and funeral scheduling, business opening ceremonies, and religious observances. Vietnamese culture considers lunar dates for major life decisions, making the calendar a practical tool rather than purely ceremonial.

What is can chi in lịch âm?

Can Chi is the sexagenary cycle combining 10 Heavenly Stems (can) and 12 Earthly Branches (chi). Each day, month, and year carries a Can Chi designation — for example, May 1, 2026 is At Hoi day and Nham Thin month. The cycle repeats every 60 years, giving traditional dates a specificity beyond Gregorian year numbers.

How often does lunar calendar add leap month?

A leap month (tháng nhuận) is inserted roughly every two to three years when solar terms drift too far from lunar months. The pattern is irregular — not every year follows the same cycle. This keeps agricultural festivals aligned with seasons despite the 11-day annual gap between 12 lunar months and one solar year.

Is lịch âm same as Chinese calendar?

Vietnamese and Chinese lunar calendars share the same astronomical basis but differ in two key ways: Vietnam uses the Cat (Mèo) where China uses the Rabbit (Mão) in the zodiac cycle, and local calculation methods can produce a one-day discrepancy near midnight. Korean lunar calendar adapts Chinese for Chuseok and Seollal holidays.

What tools for lịch vạn niên?

Top options include Ho Ngoc Duc’s applet for monthly views, the Nom Foundation converter for date-specific queries, and apps like Lich+ or Vietnamese Lunar Calendar 2026 for comprehensive feature sets including auspicious hours, directions, and prayers.

Giờ hắc đạo meaning?

Giờ hắc đạo (black auspicious) marks hours considered unfavorable for important activities, contrasting with giờ hoàng đạo (yellow auspicious) hours. Vietnamese apps typically list both sets, allowing users to schedule around inauspicious windows for significant events.

Lunar calendar for holidays only?

While festivals drive most daily lunar calendar use, the system also governs agricultural timing, feng shui calculations, traditional medicine schedules, and family ritual planning. Vietnamese apps package these elements together because they interlock in cultural practice.

Why might lunar dates differ between apps?

Discrepancies arise from different meridian references (China vs. Vietnam local time), calculation methods for new moon timing, and whether apps use the HKO tables directly or a derivative source. The Hong Kong Observatory notes potential one-day shifts near midnight due to uncertainty in astronomical calculations (Hong Kong Observatory).