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Tong Shu Calendar Reference

Auspicious Contract Signing Dates for March 2026簽約 · March 2026

By Master Sean Chan · Updated

This month carries Jing Zhe (驚蟄) — month flips to 卯 on March 5 (Singapore time): the BaZi calendar's sectional boundary for the month. Below is the universal Chinese metaphysics ranking of every day in March 2026 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
27
pass hard requirements
5
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12026-03-23己亥成 Completing房巳 (Snake)上吉
22026-03-13己丑開 Opening井未 (Goat)上吉
32026-03-08甲申執 Holding胃寅 (Tiger)上吉
42026-03-07癸未定 Stabilising婁丑 (Ox)上吉
52026-03-11丁亥成 Completing觜巳 (Snake)上吉

All days in March 2026

DateDay PillarOfficerMansion ClashNotable factorsClass
2026-03-01丁丑閉女未 Goat天德 · 建除 閉 · 黃道吉
2026-03-02戊寅建虛申 Monkey建除 建平
2026-03-03己卯除危酉 Rooster建除 除 · 宿 危平
2026-03-04庚辰滿室戌 Dog黃道吉
2026-03-05辛巳滿壁亥 Pig宿 壁吉
2026-03-06壬午平奎子 Rat建除 平 · 宿 奎 · 黃道吉
2026-03-07癸未定婁丑 Ox建除 定 · 黃道上吉
2026-03-08甲申執胃寅 Tiger月德 · 建除 執上吉
2026-03-09乙酉破昴卯 RabbitFailed requirement: not_month_break大凶
2026-03-10丙戌危畢辰 Dragon建除 危平
2026-03-11丁亥成觜巳 Snake建除 成上吉
2026-03-12戊子收參午 HorseFailed requirement: not_year_break大凶
2026-03-13己丑開井未 Goat月德合 · 建除 開 · 宿 井上吉
2026-03-14庚寅閉鬼申 Monkey建除 閉 · 黃道平
2026-03-15辛卯建柳酉 Rooster建除 建 · 黃道平
2026-03-16壬辰除星戌 Dog建除 除平
2026-03-17癸巳滿張亥 Pig宿 張吉
2026-03-18甲午平翼子 Rat月德 · 建除 平 · 黃道吉
2026-03-19乙未定軫丑 Ox四離 · 建除 定 · 宿 軫吉
2026-03-20丙申執角寅 Tiger建除 執吉
2026-03-21丁酉破亢卯 RabbitFailed requirement: not_month_break大凶
2026-03-22戊戌危氐辰 Dragon建除 危 · 宿 氐凶
2026-03-23己亥成房巳 Snake月德合 · 建除 成上吉
2026-03-24庚子收心午 HorseFailed requirement: not_year_break大凶
2026-03-25辛丑開尾未 Goat建除 開吉
2026-03-26壬寅閉箕申 Monkey建除 閉 · 宿 箕 · 黃道凶
2026-03-27癸卯建斗酉 Rooster建除 建 · 宿 斗 · 黃道吉
2026-03-28甲辰除牛戌 Dog月德 · 建除 除吉
2026-03-29乙巳滿女亥 Pig—吉
2026-03-30丙午平虛子 Rat建除 平 · 黃道平
2026-03-31丁未定危丑 Ox建除 定 · 宿 危 · 黃道吉
Personalised next step

BaZi-Aligned Date Report — March 2026

USD 388

A personalised PDF that re-ranks every contract signing-suitable day in March 2026 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

Pillars use the 60 Jiazi day cycle anchored to the published Tong Shu. The BaZi year flips at Li Chun, the BaZi month flips at each sectional solar term — both computed from VSOP87 ephemeris data. The Twelve Officers (建除) and the 28 Mansions each have their own deterministic rotation against an authoritative anchor.

Weights come from the Dong Gong (董公擇日) school. Auspicious 神煞 add, taboo 神煞 subtract, the officer and mansion adjust, Yellow Dao adds a small bonus on top. Sum, clamp to 0–100, classify. No app shortcuts.