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Tong Shu Calendar Reference

Auspicious Renovation Start Dates for February 2027裝修 · February 2027

By Master Sean Chan · Updated

This month carries Li Chun (立春) — start of the BaZi year on February 4 (Singapore time): the BaZi calendar's sectional boundary for the month. Pre-Li-Chun days still belong to the previous BaZi year — factor that into anything date-binding (registration, ground-breaking).Below is the universal Chinese metaphysics ranking of every day in February 2027 for breaking ground on renovation (動土 / 修造), derived from the classical Tong Shu (通書). Renovation is an Earth-disturbing act and is more sensitive to Earth-related taboos than weddings or business openings.

Top-ranked dates this month

28
days in February
24
pass hard requirements
4
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12027-02-23丙子開 Opening心午 (Horse)上吉
22027-02-09壬戌成 Completing畢辰 (Dragon)上吉
32027-02-18辛未執 Holding軫丑 (Ox)上吉
42027-02-04丁巳平 Balancing壁亥 (Pig)上吉
52027-02-02乙卯滿 Filling危酉 (Rooster)吉

All days in February 2027

DateDay PillarOfficerMansion ClashNotable factorsClass
2027-02-01甲寅除虛申 Monkey宿 虛 · 黃道吉
2027-02-02乙卯滿危酉 Rooster天德合 · 月德合 · 宿 危吉
2027-02-03丙辰平室戌 Dog四絕 · 建除 平大凶
2027-02-04丁巳平壁亥 Pig天德 · 建除 平 · 宿 壁上吉
2027-02-05戊午定奎子 Rat建除 定 · 宿 奎吉
2027-02-06己未執婁丑 Ox建除 執 · 黃道吉
2027-02-07庚申破胃寅 TigerFailed requirement: not_month_break大凶
2027-02-08辛酉危昴卯 Rabbit月德合 · 建除 危平
2027-02-09壬戌成畢辰 Dragon天德合 · 建除 成 · 黃道上吉
2027-02-10癸亥收觜巳 Snake—平
2027-02-11甲子開參午 Horse建除 開 · 黃道吉
2027-02-12乙丑閉井未 GoatFailed requirement: not_year_break大凶
2027-02-13丙寅建鬼申 Monkey月德 · 建除 建吉
2027-02-14丁卯除柳酉 Rooster天德吉
2027-02-15戊辰滿星戌 Dog黃道吉
2027-02-16己巳平張亥 Pig建除 平 · 宿 張 · 黃道平
2027-02-17庚午定翼子 Rat建除 定吉
2027-02-18辛未執軫丑 Ox月德合 · 建除 執 · 黃道上吉
2027-02-19壬申破角寅 TigerFailed requirement: not_month_break大凶
2027-02-20癸酉危亢卯 Rabbit建除 危 · 宿 亢凶
2027-02-21甲戌成氐辰 Dragon建除 成 · 宿 氐 · 黃道吉
2027-02-22乙亥收房巳 Snake—平
2027-02-23丙子開心午 Horse月德 · 建除 開 · 宿 心上吉
2027-02-24丁丑閉尾未 GoatFailed requirement: not_year_break大凶
2027-02-25戊寅建箕申 Monkey建除 建 · 宿 箕凶
2027-02-26己卯除斗酉 Rooster—平
2027-02-27庚辰滿牛戌 Dog黃道吉
2027-02-28辛巳平女亥 Pig月德合 · 建除 平 · 黃道吉
Personalised next step

BaZi-Aligned Date Report — February 2027

USD 388

A personalised PDF that re-ranks every renovation-suitable day in February 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.

What is 土王用事 and why is groundbreaking restricted then?

土王用事 are the four 18-day windows around each seasonal transition when the Earth phase is dominant. Disturbing the ground during these windows is taboo for renovation, foundation work, and excavation. The page’s hard-requirement filter excludes these days; for a personal alignment we also check your Earth-element balance.

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.