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Tong Shu Calendar Reference

Auspicious Contract Signing Dates for October 2028簽約 · October 2028

By Master Sean Chan · Updated

This month carries Han Lu (寒露) — month flips to 戌 on October 8 (Singapore time): the BaZi calendar's sectional boundary for the month. Below is the universal Chinese metaphysics ranking of every day in October 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

31
days in October
24
pass hard requirements
8
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12028-10-15丙子滿 Filling胃午 (Horse)上吉
22028-10-30辛卯執 Holding房酉 (Rooster)上吉
32028-10-25丙戌建 Establishing翼辰 (Dragon)上吉
42028-10-04乙丑定 Stabilising尾未 (Goat)上吉
52028-10-10辛未收 Gathering危丑 (Ox)上吉

All days in October 2028

DateDay PillarOfficerMansion ClashNotable factorsClass
2028-10-01壬戌除氐辰 Dragon建除 除 · 宿 氐平
2028-10-02癸亥滿房巳 Snake—吉
2028-10-03甲子平心午 Horse建除 平 · 黃道平
2028-10-04乙丑定尾未 Goat月德合 · 建除 定上吉
2028-10-05丙寅執箕申 MonkeyFailed requirement: not_year_break大凶
2028-10-06丁卯破斗酉 RoosterFailed requirement: not_month_break大凶
2028-10-07戊辰破牛戌 DogFailed requirement: not_month_break大凶
2028-10-08己巳危女亥 Pig建除 危 · 黃道平
2028-10-09庚午成虛子 Rat建除 成上吉
2028-10-10辛未收危丑 Ox天德合 · 月德合 · 建除 收上吉
2028-10-11壬申開室寅 Tiger建除 開 · 黃道吉
2028-10-12癸酉閉壁卯 Rabbit建除 閉 · 宿 壁 · 黃道平
2028-10-13甲戌建奎辰 Dragon建除 建 · 宿 奎平
2028-10-14乙亥除婁巳 Snake建除 除 · 黃道平
2028-10-15丙子滿胃午 Horse天德 · 月德上吉
2028-10-16丁丑平昴未 Goat建除 平平
2028-10-17戊寅定畢申 MonkeyFailed requirement: not_year_break大凶
2028-10-18己卯執觜酉 Rooster建除 執吉
2028-10-19庚辰破參戌 DogFailed requirement: not_month_break大凶
2028-10-20辛巳危井亥 Pig天德合 · 月德合 · 建除 危上吉
2028-10-21壬午成鬼子 Rat建除 成上吉
2028-10-22癸未收柳丑 Ox建除 收吉
2028-10-23甲申開星寅 Tiger建除 開 · 黃道吉
2028-10-24乙酉閉張卯 Rabbit建除 閉 · 宿 張 · 黃道平
2028-10-25丙戌建翼辰 Dragon天德 · 月德 · 建除 建上吉
2028-10-26丁亥除軫巳 Snake建除 除 · 宿 軫 · 黃道吉
2028-10-27戊子滿角午 Horse—吉
2028-10-28己丑平亢未 Goat建除 平 · 宿 亢平
2028-10-29庚寅定氐申 MonkeyFailed requirement: not_year_break大凶
2028-10-30辛卯執房酉 Rooster天德合 · 月德合 · 建除 執上吉
2028-10-31壬辰破心戌 DogFailed requirement: not_month_break大凶
Personalised next step

BaZi-Aligned Date Report — October 2028

USD 388

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

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.