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Tong Shu Calendar Reference

Auspicious ROM Dates for July 2028註冊結婚 · July 2028

By Master Sean Chan · Updated

This month carries Xiao Shu (小暑) — month flips to 未 on July 6 (Singapore time): the BaZi calendar's sectional boundary for the month. Below is the universal Chinese metaphysics ranking of every day in July 2028 for civil registration of marriage (ROM in Singapore), derived from the classical Tong Shu (通書). ROM uses a tighter rule set than a full ceremonial wedding — registration is a single act that benefits from 開 (Opening) and 成 (Completing) days and avoids 閉 (Closing) days more strictly than a full banquet.

Top-ranked dates this month

31
days in July
26
pass hard requirements
9
rank as 上吉
5
top picks below
DateDay PillarOfficer 建除 Mansion 宿Clash 沖Class
12028-07-10己亥定 Stabilising房巳 (Snake)上吉
22028-07-15甲辰收 Gathering牛戌 (Dog)上吉
32028-07-20己酉滿 Filling壁卯 (Rabbit)上吉
42028-07-14癸卯成 Completing斗酉 (Rooster)上吉
52028-07-02辛卯收 Gathering柳酉 (Rooster)上吉

All days in July 2028

DateDay PillarOfficerMansion ClashNotable factorsClass
2028-07-01庚寅成鬼申 MonkeyFailed requirement: not_year_break大凶
2028-07-02辛卯收柳酉 Rooster月德合 · 建除 收 · 黃道上吉
2028-07-03壬辰開星戌 Dog建除 開吉
2028-07-04癸巳閉張亥 Pig建除 閉 · 宿 張平
2028-07-05甲午建翼子 Rat建除 建 · 黃道平
2028-07-06乙未建軫丑 Ox建除 建 · 宿 軫平
2028-07-07丙申除角寅 Tiger黃道吉
2028-07-08丁酉滿亢卯 Rabbit宿 亢平
2028-07-09戊戌平氐辰 Dragon建除 平 · 宿 氐 · 黃道平
2028-07-10己亥定房巳 Snake天德合 · 月德合 · 建除 定上吉
2028-07-11庚子執心午 Horse宿 心吉
2028-07-12辛丑破尾未 GoatFailed requirement: not_month_break大凶
2028-07-13壬寅危箕申 MonkeyFailed requirement: not_year_break大凶
2028-07-14癸卯成斗酉 Rooster建除 成 · 宿 斗 · 黃道上吉
2028-07-15甲辰收牛戌 Dog天德 · 月德 · 建除 收上吉
2028-07-16乙巳開女亥 Pig建除 開 · 宿 女 · 黃道上吉
2028-07-17丙午閉虛子 Rat建除 閉平
2028-07-18丁未建危丑 Ox建除 建 · 宿 危平
2028-07-19戊申除室寅 Tiger黃道吉
2028-07-20己酉滿壁卯 Rabbit天德合 · 月德合上吉
2028-07-21庚戌平奎辰 Dragon建除 平 · 黃道平
2028-07-22辛亥定婁巳 Snake建除 定 · 黃道吉
2028-07-23壬子執胃午 Horse—吉
2028-07-24癸丑破昴未 GoatFailed requirement: not_month_break大凶
2028-07-25甲寅危畢申 MonkeyFailed requirement: not_year_break大凶
2028-07-26乙卯成觜酉 Rooster建除 成 · 黃道上吉
2028-07-27丙辰收參戌 Dog建除 收吉
2028-07-28丁巳開井亥 Pig建除 開 · 宿 井 · 黃道上吉
2028-07-29戊午閉鬼子 Rat建除 閉平
2028-07-30己未建柳丑 Ox天德合 · 月德合 · 建除 建上吉
2028-07-31庚申除星寅 Tiger黃道吉
Personalised next step

BaZi-Aligned Date Report — July 2028

USD 388

A personalised PDF that re-ranks every ROM / civil registration-suitable day in July 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.

Does the timing of ROM matter as much as a wedding ceremony?

Energetically yes — the registration is the legal-binding moment, and the day-pillar element it sits on travels with the marriage record. Practically the rule set is slightly looser than a full banquet (no need for 喜慶 stars), but month-break and year-break disqualifiers still apply absolutely.

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.