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Tong Shu Calendar Reference

Auspicious Contract Signing Dates for April 2028簽約 · April 2028

By Master Sean Chan · Updated

This month carries Qing Ming (清明) — month flips to 辰 on April 4 (Singapore time): the BaZi calendar's sectional boundary for the month. Below is the universal Chinese metaphysics ranking of every day in April 2028 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

30
days in April
24
pass hard requirements
9
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12028-04-14壬申定 Stabilising角寅 (Tiger)上吉
22028-04-24壬午滿 Filling虛子 (Rat)上吉
32028-04-01己未定 Stabilising婁丑 (Ox)上吉
42028-04-19丁丑收 Gathering尾未 (Goat)上吉
52028-04-26甲申定 Stabilising室寅 (Tiger)上吉

All days in April 2028

DateDay PillarOfficerMansion ClashNotable factorsClass
2028-04-01己未定婁丑 Ox月德合 · 建除 定 · 黃道上吉
2028-04-02庚申執胃寅 Tiger建除 執吉
2028-04-03辛酉破昴卯 RabbitFailed requirement: not_month_break大凶
2028-04-04壬戌破畢辰 DragonFailed requirement: not_month_break大凶
2028-04-05癸亥危觜巳 Snake建除 危 · 黃道平
2028-04-06甲子成參午 Horse建除 成上吉
2028-04-07乙丑收井未 Goat建除 收 · 宿 井吉
2028-04-08丙寅開鬼申 MonkeyFailed requirement: not_year_break大凶
2028-04-09丁卯閉柳酉 Rooster天德合 · 月德合 · 建除 閉吉
2028-04-10戊辰建星戌 Dog建除 建 · 黃道平
2028-04-11己巳除張亥 Pig建除 除 · 宿 張 · 黃道吉
2028-04-12庚午滿翼子 Rat—吉
2028-04-13辛未平軫丑 Ox建除 平 · 宿 軫平
2028-04-14壬申定角寅 Tiger天德 · 月德 · 建除 定上吉
2028-04-15癸酉執亢卯 Rabbit建除 執 · 宿 亢 · 黃道吉
2028-04-16甲戌破氐辰 DragonFailed requirement: not_month_break大凶
2028-04-17乙亥危房巳 Snake建除 危 · 黃道平
2028-04-18丙子成心午 Horse建除 成上吉
2028-04-19丁丑收尾未 Goat天德合 · 月德合 · 建除 收上吉
2028-04-20戊寅開箕申 MonkeyFailed requirement: not_year_break大凶
2028-04-21己卯閉斗酉 Rooster建除 閉 · 宿 斗平
2028-04-22庚辰建牛戌 Dog建除 建 · 黃道平
2028-04-23辛巳除女亥 Pig建除 除 · 黃道平
2028-04-24壬午滿虛子 Rat天德 · 月德上吉
2028-04-25癸未平危丑 Ox建除 平 · 宿 危平
2028-04-26甲申定室寅 Tiger建除 定 · 黃道上吉
2028-04-27乙酉執壁卯 Rabbit建除 執 · 宿 壁 · 黃道吉
2028-04-28丙戌破奎辰 DragonFailed requirement: not_month_break大凶
2028-04-29丁亥危婁巳 Snake天德合 · 月德合 · 建除 危上吉
2028-04-30戊子成胃午 Horse建除 成上吉
Personalised next step

BaZi-Aligned Date Report — April 2028

USD 388

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

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.