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Tong Shu Calendar Reference

Auspicious Business Opening Dates for November 2028開業 · November 2028

By Master Sean Chan · Updated

This month carries Li Dong (立冬) — start of the BaZi winter on November 7 (Singapore time): the BaZi calendar's sectional boundary for the month. Winter starts; Water-element days take precedence in many ranking shifts that follow.Below is the universal Chinese metaphysics ranking of every day in November 2028 for opening a business (開市), derived from the classical Tong Shu (通書). Opening is treated as a 'beginning' — the rules favour 開 (Opening) and 建 (Establishing) officers and Yellow Dao days carrying 天德 / 月德 protection.

Top-ranked dates this month

30
days in November
25
pass hard requirements
6
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12028-11-04丙申Opening寅 (Tiger)上吉
22028-11-17己酉Opening卯 (Rabbit)上吉
32028-11-27己未Completing丑 (Ox)上吉
42028-11-12甲辰Holding戌 (Dog)上吉
52028-11-23乙卯Stabilising酉 (Rooster)上吉

All days in November 2028

DateDay PillarOfficerMansion ClashNotable factorsClass
2028-11-01癸巳亥 Pig建除 危 · 黃道
2028-11-02甲午子 Rat建除 成 · 宿 箕
2028-11-03乙未丑 Ox宿 斗
2028-11-04丙申寅 Tiger天德 · 月德 · 建除 開上吉
2028-11-05丁酉卯 Rabbit建除 閉 · 黃道
2028-11-06戊戌辰 Dragon四絕 · 建除 閉 · 宿 虛大凶
2028-11-07己亥巳 Snake月德合 · 宿 危 · 黃道
2028-11-08庚子午 Horse天德合
2028-11-09辛丑滿未 Goat建除 滿 · 黃道
2028-11-10壬寅申 MonkeyFailed requirement: not_year_break大凶
2028-11-11癸卯酉 Rooster
2028-11-12甲辰戌 Dog月德 · 建除 執 · 黃道上吉
2028-11-13乙巳亥 PigFailed requirement: not_month_break大凶
2028-11-14丙午子 Rat建除 危 · 黃道
2028-11-15丁未丑 Ox建除 成 · 黃道
2028-11-16戊申寅 Tiger宿 參
2028-11-17己酉卯 Rabbit月德合 · 建除 開 · 宿 井上吉
2028-11-18庚戌辰 Dragon天德合 · 建除 閉 · 黃道
2028-11-19辛亥巳 Snake黃道
2028-11-20壬子午 Horse
2028-11-21癸丑滿未 Goat建除 滿 · 宿 張 · 黃道上吉
2028-11-22甲寅申 MonkeyFailed requirement: not_year_break大凶
2028-11-23乙卯酉 Rooster天德 · 宿 軫上吉
2028-11-24丙辰戌 Dog建除 執 · 黃道
2028-11-25丁巳亥 PigFailed requirement: not_month_break大凶
2028-11-26戊午子 Rat建除 危 · 宿 氐 · 黃道
2028-11-27己未丑 Ox月德合 · 建除 成 · 黃道上吉
2028-11-28庚申寅 Tiger天德合
2028-11-29辛酉卯 Rabbit建除 開
2028-11-30壬戌辰 Dragon建除 閉 · 宿 箕 · 黃道
Personalised next step

BaZi-Aligned Date Report — November 2028

USD 388

A personalised PDF that re-ranks every business opening-suitable day in November 2028 against your BaZi (and, for weddings/ROM, your partner’s BaZi). It surfaces:

Order the report →

See the full glossary of classical date-selection terms in the BaZi Glossary & Auxiliary Stars.

Further reading from the blog

Selected posts from Master Sean Chan's blog covering this topic and closely related ones in practice:

Frequently asked

Why isn’t my day on the list of top 5?

The top list is the universal ranking before any personal adjustment. Many couples find their best date isn’t in the top 5. Once you account for your day pillars, the right day often shifts. That’s exactly the gap the BaZi-Aligned Date Report fills.

What does 大凶 mean and can it ever be overridden?

大凶 means the day fails a hard classical requirement: 月破 (month break), 歲破 (year break), or 四離/四絕 (a quarter-day boundary). These cannot be overridden by personal alignment; they are excluded categorically. Choose another day.

Why don’t you show times here?

Hour selection is personal. The right hour depends on your day pillar and the chosen day’s element relationship to it. Publishing universal “auspicious hours” misleads readers into thinking a generic hour is safe; it isn’t. Hours are included in the personalised report.

Where do these scores come from?

The classical Tong Shu (通書) tradition: 建除十二神 (Twelve Officers), 二十八宿 (Twenty-Eight Mansions), 月德 / 天德 (monthly and yearly virtue stars), 黃黑道 (Yellow/Black Dao), and the Dong Gong (董公) per-purpose rules. We compute these directly from astronomical solar terms — no app shortcuts.

Should I open the business on the same day as my company registration?

If you can — yes. Aligning the opening with the legal incorporation compounds the day’s influence on both events. If they have to be different, prioritise the opening (the customer-facing first day) over the registration date.

Methodology

Each day’s pillar is computed from the 60 Jiazi rotation anchored against the published Tong Shu, not from any single calendar app. The BaZi year flips at Li Chun (立春) and the BaZi month flips at every sectional solar term, both calculated from VSOP87 solar-longitude data so the boundaries land on the right minute. Twelve Officers and the 28 Mansions each rotate deterministically against well-known anchors.

The per-purpose weights are Dong Gong’s (董公擇日) — adjusted where modern almanacs disagree, in favour of the Hong Kong Observatory and Taiwan CWB lineage. Auspicious stars add to the score, taboo stars subtract, the day’s officer and mansion shift it further, and Yellow Dao adds a final small bonus. The final number gets capped at 100 and mapped to one of five tiers.