開市 · Auspicious Dates
Auspicious Days for Opening a Business in May 2027
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May 2027: 4 Good, 19 Fair, 8 Avoid
Calendar
Every date, best first
- Mon 3 MayGood
- Sun 16 MayGood
- Mon 24 MayGood
- Fri 28 MayGood
- Sat 1 MayFair
- Sun 2 MayFair
- Tue 4 MayFair
- Thu 6 MayFair
- Fri 7 MayFair
- Sun 9 MayFair
- Tue 11 MayFair
- Fri 14 MayFair
- Sat 15 MayFair
- Mon 17 MayFair
- Tue 18 MayFair
- Wed 19 MayFair
- Fri 21 MayFair
- Sun 23 MayFair
- Wed 26 MayFair
- Thu 27 MayFair
- Sat 29 MayFair
- Sun 30 MayFair
- Mon 31 MayFair
- Wed 5 MayAvoid
四絕 Eve of a new season (立 term)
- Sat 8 MayAvoid
破 Destruction day, the month breaker
- Mon 10 MayAvoid
歲破 Year breaker: clashes the Goat year
- Wed 12 MayAvoid
楊公忌 Yang Gong taboo day
- Thu 13 MayAvoid
閉 Close day
- Thu 20 MayAvoid
破 Destruction day, the month breaker
- Sat 22 MayAvoid
歲破 Year breaker: clashes the Goat year
- Tue 25 MayAvoid
閉 Close day
About opening a business dates
Opening a business is 開市 in the almanac: the first day you trade or welcome customers. The classic choices are 開 Open, 成 Success and 滿 Full, a day of abundance that suits trade and collecting payments.
We skip Destruction and Close days (Close is the opposite of opening), year-breaker days, the eve of each season change and Yang Gong taboo days. Hungry Ghost month is not excluded, but many shop owners still avoid launching then.
Add the owner’s or main partner’s birth year to hide days that clash with them. The day you take your first sale matters more than the day you register the company.
Questions about opening a business dates
Is it the registration date or the opening date that matters?
Traditionally, the opening: the first day you trade, open the doors or take the first sale. Company registration is administrative and rarely chosen by date.
Does the time of day matter?
Many owners light the first incense or open the shutters at an auspicious hour in the morning. This page covers the day only. A personal report can add the hours.
What if my only available date is a Fair day?
A Fair day has no traditional exclusions. You can soft-open on it and hold the grand opening ceremony on a Good day later.
What about Hungry Ghost month?
The classic opening rules do not exclude it, so those days are not greyed out. Many shop owners in Singapore and Malaysia still prefer to launch after the 7th lunar month.
Is it the same for an online business?
The same principles are used for the launch date of a website or online shop. Treat the day orders open as the opening.
Want a date chosen for your whole family's charts?
Get a personal date selection report. It checks every household member's full BaZi chart, not just their animal, and suggests the best days and hours. Join the waitlist and we'll email you when it opens.
A simplified traditional method for reflection and cultural interest. For a wedding, a business launch or a major purchase, many families also consult a feng shui master.