# 1986 Chinese Zodiac: Fire Tiger, Years and Compatibility

1986 is the year of the Fire Tiger in the Chinese zodiac. The Ox year before it ran to 8 February under the national standard, so eight January days disagree.

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- Language: English
- Published: 2026-10-16T18:20:00+08:00
- Updated: 2026-10-17T17:29:00+08:00
- Author: Ziheng — https://gptbazi.com/author/ziheng

> GPTbazi is a personality map for entertainment and self-reflection. It is not medical, legal, financial, or psychological advice, and it is not a prediction of events. Calendar dates and solar-term boundaries are astronomical and official calendar facts, not readings of a person.

## Bing-yin: how a Fire Tiger is spelled out

The year 1986 carries the Tiger, and more precisely the Fire Tiger. The sexagenary cycle — the sixty-term count that pairs one heavenly stem with one earthly branch — names it 丙寅 (Bing-yin). Bing is the third of the ten stems and one of the two assigned to Fire; Yin is the third of the twelve branches, the Tiger. The animal comes round every twelve years, but the stems cycle every ten, so this exact stem-and-animal pair returns once in sixty: 1926, 1986, 2046.

Being the third term of the cycle says nothing about the year itself. It follows from a starting point: counting from 1984, which is Jia-zi, the first term, gives 1984 Jia-zi, 1985 Yi-chou, 1986 Bing-yin.

Two conventions give this year different edges. Under China's national standard for the calendar the animal changes on Lunar New Year's Day, which in 1986 is 9 February. Chart-reading changes the sexagenary year at Li Chun, which in 1986 is 4 February. 1986 is not a leap year: the Gregorian year has 365 days and no extra February day to place.

The next section gives the branch's relations. Everything after it turns on the distance between those two dates. They are 5 days apart this year, and the 6-day stretch they enclose — 4 February to 9 February — is the only part of the year where the two conventions disagree about which animal a birthday carries.

## 1986 Compatibility: Six Harmony, Clash and Trine

The year gives one branch and nothing else — 寅 Yin, the Tiger. The three relations below follow from that branch alone: they hold for every birth whose year branch is 寅, and they do not depend on the month, the day or the hour.

| Relation | Branch | Animal |
| --- | --- | --- |
| Six harmony (六合) | 亥 Hai | Pig |
| Clash (相冲) | 申 Shen | Monkey |
| Three harmony (三合) | 午 and 戌 | Horse, Dog |

A chart reads the four branches against each other, not the year branch on its own. [The 144-pair table](/blog/chinese-zodiac-compatibility-chart) has every pair.

## The Ox year that runs eight days into February

Under the national standard the Ox year that began on 20 February 1985 ran until 8 February 1986. It was 354 days long, so it takes in the whole of January 1986 and then the first eight days of February. Someone born on 1 February 1986, or on 8 February 1986, belongs to the Ox year on that reckoning. The Tiger year starts on the ninth.

Chart-reading does not wait for that. It changes the year at Li Chun, on 4 February, so the last five days of the Ox year as the standard counts it — 4 February through 8 February — are already Tiger days in a chart. The Ox year has two different last days, 5 days apart, and the days between them are read two ways. The table two sections further on lists all 6 days of the stretch.

## The two lines, and which one moves first

A zodiac year does not begin on 1 January, and the day it does begin on has no single answer. China's national standard for the calendar, GB/T 33661-2017, drafted by the Purple Mountain Observatory of the Chinese Academy of Sciences, starts the lunar year at the first month, and the animal year shares that reference: the animal changes on Lunar New Year's Day. Chart-reading changes the sexagenary year at Li Chun, the solar term that opens spring.

In 1986 the two lines fall 5 days apart, and this year Li Chun comes first: Li Chun is 4 February and Lunar New Year's Day is 9 February. That means chart-reading changes the animal 5 days before the national standard does.

[Chinese Zodiac Year Boundary](/blog/chinese-zodiac-year-boundary-dates) lists both lines for every year from 1940 to 2030, with the gap in days for each.

## Five days that read two ways

6 calendar days in 1986 sit on or between the two lines, and 5 of them are read differently depending on which convention is in play.

| Date in 1986 | Under the national standard | Under chart-reading |
| --- | --- | --- |
| 4 February – 8 February (5 days) | Ox | Tiger |
| 9 February | Tiger | Tiger |

The 5 days from 4 February are the contested ones. The standard still counts them inside 1985, whose animal is the Ox, because Lunar New Year has not arrived; chart-reading has already changed the year at Li Chun on 4 February. On 9 February the two lines meet: that day is Lunar New Year's Day itself, the first day of the Tiger year under the standard, and chart-reading has been there since Li Chun. From then on both conventions read the same animal.

A birth on the boundary day itself is the harder case, because Li Chun is a moment rather than a day. The page linked above explains why it gives days and not times.

## The same 5 February, four years running

One calendar date is enough to show that the distance between the two lines is not a property of the animal. Take 5 February and read it in four consecutive years.

| 5 February in | Under the national standard | Under chart-reading |
| --- | --- | --- |
| 1984 | Rat | Rat |
| 1985 | Rat | Ox |
| 1986 | Ox | Tiger |
| 1987 | Rabbit | Rabbit |

In 1984 and 1987 the two conventions agree, because by 5 February both Li Chun and Lunar New Year's Day have already passed. In 1985 and 1986 they disagree — and about different pairs of animals: 1985 sets the Rat against the Ox, 1986 sets the Ox against the Tiger.

What separates the two contested years is how far 5 February sits from Lunar New Year's Day. In 1986 the new year is 9 February, so that date is 4 days short of it. In 1985 the new year is 20 February, so the same date is 15 days short. Li Chun, by contrast, is 4 February in every one of the four years; the sun's line does not move on this scale. The line that moves is the moon's, and a February birthday gets whichever answer the moon has drifted into that particular year.

## Why Lunar New Year drifts eleven days, then nineteen back

The reason 5 February reads differently from one year to the next is arithmetic. A lunar year of twelve months is about 354 days, eleven short of the 365 days in the Gregorian year. Left to itself, Lunar New Year's Day therefore arrives eleven days earlier each year: 20 February 1985, 9 February 1986, 29 January 1987.

What stops the slide is the leap month. The lunar year that opened on 29 January 1987 ran 384 days and thirteen months, because a month is inserted into it; the next Lunar New Year's Day therefore lands nineteen days later than the same date a year on, on 17 February 1988.

Nineteen forward against eleven back: the new-year date is those two numbers alternating, which is why a February birthday cannot be looked up once and remembered. 1986 sits on the backward leg. Its own lunar year opened on 9 February and ran 354 days over 12 months, with no month numbered twice.

## How to check these five days

The Observatory publishes one plain-text file per year, and for 1986 it is T1986e.txt, listed under its Gregorian-Lunar calendar conversion tables. Each line is a date, then the lunar month and day if that day opens a month, then the weekday, then any solar term falling on it. Two of the lines settle the whole question: the one for 9 February carries "1st Lunar month", which is the day the standard's line turns over, and the one for 4 February carries "Spring Commences", which is Li Chun, the day chart-reading's line turns over.

Every date on this page is read from those lines and the ones between them; none of them is taken from a secondary account. No clock time is given for either line — not for Li Chun, not for Lunar New Year's Day. A term falls on a day and this page says which day; the hour is not carried by the same authoritative source across the whole span, so it is left out rather than filled in from another kind of source. A birth on one of the two boundary days is the one case this page cannot settle, and it says so instead of guessing.

## Where the 1986 dates come from

Li Chun, Lunar New Year's Day and the lengths of the lunar years quoted here are read from the Hong Kong Observatory's Gregorian-Lunar Calendar Conversion Table for 1986 and for the years on either side of it; the four-year comparison uses the tables for 1984, 1985, 1986 and 1987, and the count of the twelve sectional terms uses the Observatory's tables from 1940 to 2030. The standard behind the first line is GB/T 33661-2017, drafted by the Purple Mountain Observatory of the Chinese Academy of Sciences.

[Chinese Zodiac Year Boundary](/blog/chinese-zodiac-year-boundary-dates) lists both lines for every year from 1940 to 2030 with the gap in days for each; the four gaps compared above sit in a run that changes sign twice within four years. [How we cite](/how-we-cite) sets out how sources are chosen and dated on this site.

The full table behind this page — 1901 to 2100 — is published as a free dataset: [chinese zodiac year boundaries](/zodiac-dates).

## Key points

- 1986 is Bing-yin in the sexagenary cycle: the third stem over the third branch, which makes it the Fire Tiger. The pair returns in 1926, 1986, 2046. The classical six-harmony tables pair Yin, the Tiger, with Hai, the Pig; the clash table sets it against Shen, the Monkey, and its three-harmony ring is Yin–Wu–Xu — the Tiger with the Horse and the Dog.
- The Ox year that began on 20 February 1985 ran until 8 February 1986, so under the national standard the first eight days of February 1986 still belong to it.
- Five of those days — 4 to 8 February — are read differently by the two conventions: Ox on the standard's line, Tiger in a chart. The two lines meet on 9 February.
- 5 February reads Rat in 1984, Rat or Ox in 1985, Ox or Tiger in 1986 and Rabbit in 1987, because the gap between the two lines changes sign twice in four years.
- The gap moves because a twelve-month lunar year is 354 days, eleven short of the Gregorian year; a leap month then puts nineteen days back. 1986 sits on the backward leg, with no repeated month in its lunar year.

## Sources

- Hong Kong Observatory — Gregorian-Lunar Calendar Conversion Table for 1986 (the file this page reads) — https://www.hko.gov.hk/en/gts/time/calendar/text/files/T1986e.txt (accessed 2026-10-16)
- Hong Kong Observatory — Gregorian-Lunar Calendar Conversion Table (year index) — https://www.hko.gov.hk/en/gts/time/conversion1_text.htm (accessed 2026-10-16)
- GB/T 33661-2017 《农历的编算和颁行》 — national standard record (drafted by the Purple Mountain Observatory; in force 1 September 2017) — https://std.samr.gov.cn/gb/search/gbDetailed?id=71F772D817FDD3A7E05397BE0A0AB82A (accessed 2026-10-16)
- Guangming Online (光明网) — what GB/T 33661-2017 fixes as the start and end of a zodiac year — https://m.gmw.cn/2024-02/08/content_1303656542.htm (accessed 2026-10-16)
- GPTbazi — BaZi methodology and the solar-term boundary — https://gptbazi.com/about (accessed 2026-10-16)
- GPTbazi — how sources are chosen and dated — https://gptbazi.com/how-we-cite (accessed 2026-10-16)

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