What is Rảnh Không?

Rảnh Không is a free group scheduling tool. Create a poll with multiple time options, share the link, and everyone votes for the times that work for them. The system automatically summarizes results so your group can find the best meeting time.

Do I need an account to use it?

No. You can create and join events without signing up. However, creating a free account lets you manage all your events, edit them, and track vote results anytime.

How is Rảnh Không different from Doodle or When2Meet?

Rảnh Không is designed to be faster and simpler — create a poll in 30 seconds, no login required for participants. It’s completely free with no ads and no participant limits, unlike Doodle’s paid tiers.

How long does it take to create a scheduling poll?

About 30 seconds: name your event, pick time slots on the calendar, then click Create. Share the link with your group — they can vote instantly without signing up.

What is the Vietnamese Lunar Calendar?

The Vietnamese Lunar Calendar (Âm Lịch) is a lunisolar calendar used to determine traditional festivals, Tết (Lunar New Year), and auspicious dates. Unlike the Gregorian calendar, it follows the Moon's cycles, with months of 29–30 days and occasional leap months.

What are Hoàng Đạo (auspicious) days?

Hoàng Đạo days are considered auspicious in Vietnamese tradition. They are determined by which of the 12 celestial gods (Thập Nhị Thần) governs the day. Six gods are auspicious: Thanh Long, Minh Đường, Kim Quỹ, Ngọc Đường, Tư Mệnh, Thiên Đức. These days are traditionally favored for weddings, business openings, and important decisions.

How are lucky hours (Giờ Hoàng Đạo) calculated?

Lucky hours are 6 of the 12 two-hour periods in a day, determined by the day's Heavenly Stem (Can). For example, on a Giáp/Kỷ day, the lucky hours are Tý (23–01), Sửu (01–03), Thìn (07–09), Tỵ (09–11), Mùi (13–15), and Tuất (19–21).

What are Tam Nương Sát days?

Tam Nương Sát (Three Lady Curse) days fall on the 3rd, 7th, 13th, 18th, 22nd, and 27th of each lunar month. They are traditionally considered inauspicious for starting major events like weddings, contracts, or business openings.

How accurate is this lunar calendar converter?

This tool uses the astronomical algorithm by Ho Ngoc Duc, one of the most precise Vietnamese lunar calendar algorithms available. It is accurate for dates from 1900 to 2100.

Vietnamese Lunar Calendar & Auspicious Days

Check today's lunar date, auspicious (Hoàng Đạo) days, lucky hours, and upcoming Vietnamese lunar festivals — free, no sign-up needed.

Today

11:24:47

Sunday, February 22, 2026

Lunar

6/1 ÂL

Tháng Giêng

Year

Bính Ngọ

🐎 Ngựa

Day

Đinh Mão

God

Kim Quỹ

Auspicious ✓

Lucky Hours (Hoàng Đạo)

Mão 05:00–07:00Thìn 07:00–09:00Mùi 13:00–15:00Thân 15:00–17:00Tuất 19:00–21:00Hợi 21:00–23:00

Upcoming Events

🏮

Khai Hạ (Hạ Nêu)

23/02/2026 · 7/1 ÂL

1 day left

🏮

Rằm Tháng Giêng – Tết Nguyên Tiêu

03/03/2026 · 15/1 ÂL

9 days left

🌕

Ngày Rằm Tháng Hai

02/04/2026 · 15/2 ÂL

39 days left

🏛️

Giỗ Tổ Hùng Vương

26/04/2026 · 10/3 ÂL

63 days left

🌕

Ngày Rằm Tháng Ba

01/05/2026 · 15/3 ÂL

68 days left

☸️

Lễ Phật Đản (Vesak)

31/05/2026 · 15/4 ÂL

98 days left

Monthly Calendar View

Tháng 2 2026

Tháng Chạp

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Legend

GreatAuspicious + Major Festival

GoodHoàng Đạo Day

Neutral

UnfavorableHắc Đạo Day

AvoidHắc Đạo + Tam Nương Sát

Day Details

Click any date on the calendar to view full details.

How to use the Lunar Calendar

Check the 'Today' card to instantly see the current lunar date, Can Chi, and today's auspicious hours.

Use the ← → buttons to navigate months. Colors on the calendar indicate auspicious (green/gold) vs. unfavorable (red) days.

Click any date cell to view full details: Can Chi, celestial god, lunar events, and lucky hours for that day.

Check 'Upcoming Events' to count down to Tết, the Mid-Autumn Festival, full moons, and other important dates.

Frequently Asked Questions

Common Uses

•Find auspicious dates for weddings, grand openings, or signing contracts
•Count down to Tết Nguyên Đán, Tết Trung Thu, and other major festivals
•Identify lucky hours for travel, starting a new job, or important meetings
•Plan events following Vietnamese cultural traditions

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📝

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🎯

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