The 2020s through three systems: personal years, the stem-branch cycle and Period 9, and how to read any forecast for the decade

People ask whether next year will be a good one. There is no general answer, because each system divides time on its own rhythm, and most of those rhythms depend on the individual's birth date.

This piece sets three systems side by side for 2020 to 2030: the numerological personal year, the stem-branch cycle, and feng shui's Period 9 along with the astrological markers people often mention. The aim is not to forecast but to see how they differ, and how to read them without being swept along.

Numerology: your own nine-year cycle

The personal year comes from adding your birth day, birth month and the current year, then reducing to one digit. Year 1 is for sowing; year 9 is for closing. Because it depends on the birth date, two people living through the same year can be at opposite stages.

Take two people, one born on 15 August and one on 20 April. From 2026 to 2030 the first passes through personal years 6, 7, 8, 9 and then 1. The second passes through 7, 8, 9, 1 and then 2. In 2029 the person born on 15 August is in year 9, a year of clearing and endings, while the person born on 20 April is in year 1, a year of beginnings. If they are married, 2029 is the year one wants to let things go while the other wants to start something new.

Stem and branch: one pair a year, one reaction per sign

• 2020 Canh Tý, 2021 Tân Sửu, 2022 Nhâm Dần, 2023 Quý Mão, 2024 Giáp Thìn, 2025 Ất Tỵ.
• 2026 Bính Ngọ, 2027 Đinh Mùi, 2028 Mậu Thân, 2029 Kỷ Dậu, 2030 Canh Tuất.

In this system the same year meets each sign differently. 2026 is a Horse year: Horses meet their own year, Rats meet a clash, and Tigers and Dogs meet a year of their trine. 2027 is the Goat, clashing with the Ox. 2028 is the Monkey, clashing with the Tiger. 2029 is the Rooster, clashing with the Cat. 2030 is the Dog, clashing with the Dragon.

The year-by-year readings on Thấu Mình, such as Giáp Tuất 1994 or Canh Ngọ 1990, go through 2026 to 2030 in exactly this way, along with Tam Tai, Kim Lâu and the ruling star of each year.

Period 9: twenty years from 2024

In Flying Star feng shui, time is divided into nine periods of twenty years each. Period 8 ran from 2004 to the end of 2023. From early 2024, by this reckoning, the world entered Period 9, which runs to 2043 and belongs to the Fire element.

In 2023 and 2024 feng shui practitioners talked about Period 9 constantly: which industries would rise, which house directions were favoured, which colours to use. The sensible reading is to treat it as a way of telling a story about the era, not as a promise. Twenty years is long enough for almost any industry to rise and fall at some point.

On 21 December 2020, Jupiter and Saturn came closer than in nearly 800 years

These two meet in the sky roughly every twenty years, and astrologers treat each meeting as the turn of a cycle. The 2020 conjunction was unusual: the apparent gap between them shrank to about a fifth of the Moon's width, so close the naked eye could barely split them. The previous conjunction that close was in 1623, but it sat too near the Sun to be seen. For one that close that people on the ground could actually watch, you have to go back to 1226.

Astrologers called it the start of an Air period: less about material things, more about information and networks. The idea was repeated a great deal through 2020, and it is easy to see why: that was the year the world moved onto screens.

Which is exactly where care is needed. The pandemic began in late 2019, a full year before that December date. A forecast written after the event always fits. To test the claim you have to ask the other question: did anyone use this conjunction to predict something specific, in writing, before it happened?

The one question that filters decade forecasts

Between now and 2030 you will read a great many forecasts, from Period 9 to Pluto's entry into Aquarius in 2024. One question filters out most of them: does this forecast say anything specific enough to be wrong? "Technology will change our lives" cannot be wrong, so it cannot be right either. "House prices in city X will halve before 2028" can be wrong, which is exactly why it is worth writing down and checking later.

For your own life, the healthiest use is to treat each system as a prompting question rather than a prediction. The personal year asks whether you are at the start or end of a cycle. The stem-branch year asks whether this year sits well with your sign. Astrology asks which part of the chart this period touches. Three questions worth thinking about. Three predictions are not.