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Tong Shu Calendar Reference

Auspicious Contract Signing Dates for March 2027簽約 · March 2027

By Master Sean Chan · Updated

This month carries Jing Zhe (驚蟄) — month flips to 卯 on March 6 (Singapore time): the BaZi calendar's sectional boundary for the month. Below is the universal Chinese metaphysics ranking of every day in March 2027 for signing a contract (立券 / 交易), derived from the classical Tong Shu (通書). Contracts are agreements meant to hold — the rules favour 定 (Stabilising), 成 (Completing), and 執 (Holding) officers.

Top-ranked dates this month

31
days in March
26
pass hard requirements
5
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12027-03-18己亥成 Completing軫巳 (Snake)上吉
22027-03-01壬午定 Stabilising虛子 (Rat)上吉
32027-03-26丁未定 Stabilising斗丑 (Ox)上吉
42027-03-14乙未定 Stabilising柳丑 (Ox)上吉
52027-03-06丁亥成 Completing婁巳 (Snake)上吉

All days in March 2027

DateDay PillarOfficerMansion ClashNotable factorsClass
2027-03-01壬午定虛子 Rat天德合 · 建除 定上吉
2027-03-02癸未執危丑 Ox建除 執 · 宿 危 · 黃道吉
2027-03-03甲申破室寅 TigerFailed requirement: not_month_break大凶
2027-03-04乙酉危壁卯 Rabbit建除 危 · 宿 壁平
2027-03-05丙戌危奎辰 Dragon建除 危 · 宿 奎平
2027-03-06丁亥成婁巳 Snake建除 成上吉
2027-03-07戊子收胃午 Horse建除 收 · 黃道吉
2027-03-08己丑開昴未 GoatFailed requirement: not_year_break大凶
2027-03-09庚寅閉畢申 Monkey建除 閉 · 黃道平
2027-03-10辛卯建觜酉 Rooster建除 建 · 黃道平
2027-03-11壬辰除參戌 Dog建除 除平
2027-03-12癸巳滿井亥 Pig宿 井吉
2027-03-13甲午平鬼子 Rat月德 · 建除 平 · 黃道吉
2027-03-14乙未定柳丑 Ox建除 定 · 黃道上吉
2027-03-15丙申執星寅 Tiger建除 執吉
2027-03-16丁酉破張卯 RabbitFailed requirement: not_month_break大凶
2027-03-17戊戌危翼辰 Dragon建除 危平
2027-03-18己亥成軫巳 Snake月德合 · 建除 成 · 宿 軫上吉
2027-03-19庚子收角午 Horse建除 收 · 黃道吉
2027-03-20辛丑開亢未 GoatFailed requirement: not_year_break大凶
2027-03-21壬寅閉氐申 Monkey建除 閉 · 宿 氐 · 黃道凶
2027-03-22癸卯建房酉 Rooster建除 建 · 黃道平
2027-03-23甲辰除心戌 Dog月德 · 建除 除吉
2027-03-24乙巳滿尾亥 Pig—吉
2027-03-25丙午平箕子 Rat建除 平 · 宿 箕 · 黃道平
2027-03-26丁未定斗丑 Ox建除 定 · 宿 斗 · 黃道上吉
2027-03-27戊申執牛寅 Tiger建除 執吉
2027-03-28己酉破女卯 RabbitFailed requirement: not_month_break大凶
2027-03-29庚戌危虛辰 Dragon建除 危平
2027-03-30辛亥成危巳 Snake建除 成 · 宿 危吉
2027-03-31壬子收室午 Horse建除 收 · 黃道吉
Personalised next step

BaZi-Aligned Date Report — March 2027

USD 388

A personalised PDF that re-ranks every contract signing-suitable day in March 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.

If a contract is signed on a 大凶 day, is the contract void?

Legally no — the document is binding regardless. Energetically the method holds that the agreement carries the day’s deficits (month break weakens its longevity; year break invites reversal). Choose another day if at all possible; if you can’t, the personalised report identifies the least-bad alternative.

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.