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Tong Shu Calendar Reference

Auspicious Wedding Dates for August 2027結婚 · August 2027

By Master Sean Chan · Updated

Below is the universal Chinese metaphysics ranking of every day in August 2027 for a wedding ceremony, derived from the classical Tong Shu (通書). It applies to no specific couple — it shows which days the calendar itself favours or warns against based on the Twelve Officers (建除十二神), Twenty-Eight Mansions (二十八宿), monthly and yearly Shen Sha (神煞), and the Yellow/Black Dao (黃黑道) cycle.

Top-ranked dates this month

31
days in August
26
pass hard requirements
6
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12027-08-28壬午Opening子 (Rat)上吉
22027-08-14戊辰Completing戌 (Dog)上吉
32027-08-05己未Establishing丑 (Ox)上吉
42027-08-01乙卯Completing酉 (Rooster)上吉
52027-08-03丁巳Opening亥 (Pig)上吉

All days in August 2027

DateDay PillarOfficerMansion ClashNotable factorsClass
2027-08-01乙卯酉 Rooster建除 成 · 宿 柳 · 黃道上吉
2027-08-02丙辰戌 Dog建除 收
2027-08-03丁巳亥 Pig建除 開 · 宿 張 · 黃道上吉
2027-08-04戊午子 Rat建除 閉
2027-08-05己未丑 Ox天德合 · 月德合 · 建除 建上吉
2027-08-06庚申寅 Tiger建除 除 · 黃道
2027-08-07辛酉卯 RabbitFailed requirement: not_four_separation大凶
2027-08-08壬戌滿辰 Dragon月德 · 宿 氐 · 黃道
2027-08-09癸亥巳 Snake天德 · 建除 平 · 宿 房
2027-08-10甲子午 Horse建除 定 · 宿 心 · 黃道
2027-08-11乙丑未 GoatFailed requirement: not_year_break大凶
2027-08-12丙寅申 MonkeyFailed requirement: not_month_break大凶
2027-08-13丁卯酉 Rooster月德合 · 建除 危 · 宿 斗
2027-08-14戊辰戌 Dog天德合 · 建除 成 · 宿 牛上吉
2027-08-15己巳亥 Pig建除 收 · 宿 女 · 黃道
2027-08-16庚午子 Rat建除 開 · 宿 虛
2027-08-17辛未丑 Ox建除 閉 · 宿 危 · 黃道
2027-08-18壬申寅 Tiger月德 · 建除 建
2027-08-19癸酉卯 Rabbit天德 · 建除 除 · 宿 壁
2027-08-20甲戌滿辰 Dragon宿 奎 · 黃道
2027-08-21乙亥巳 Snake建除 平 · 宿 婁
2027-08-22丙子午 Horse建除 定 · 宿 胃 · 黃道
2027-08-23丁丑未 GoatFailed requirement: not_year_break大凶
2027-08-24戊寅申 MonkeyFailed requirement: not_month_break大凶
2027-08-25己卯酉 Rooster建除 危
2027-08-26庚辰戌 Dog建除 成 · 宿 參 · 黃道上吉
2027-08-27辛巳亥 Pig建除 收 · 宿 井 · 黃道
2027-08-28壬午子 Rat月德 · 建除 開上吉
2027-08-29癸未丑 Ox天德 · 建除 閉 · 宿 柳
2027-08-30甲申寅 Tiger建除 建
2027-08-31乙酉卯 Rabbit建除 除 · 宿 張
Personalised next step

BaZi-Aligned Date Report — August 2027

USD 388

A personalised PDF that re-ranks every wedding-suitable day in August 2027 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.

Methodology

Day pillars derive from the standard 60 Jiazi anchor (sexagenary day cycle, anchored against the published Tong Shu). Year pillars switch on Li Chun (立春), the first solar term of the BaZi year, computed from the truncated VSOP87 series for solar longitude. Month pillars switch on each sectional solar term. The Twelve Officers are the day branch’s offset from the month branch; the Twenty-Eight Mansions cycle every 28 days against an authoritative anchor.

Per-purpose rules follow the Dong Gong (董公擇日) tradition with adjustments encoded in our open purpose_rules.yaml. Scores are additive over the day’s present 神煞, the officer/mansion preference, and the Yellow Dao bonus, then clamped to 0–100 and classified.