What is the Holocene?

The Holocene is the current geological epoch, which began approximately 11,700 years ago when the last ice age ended. It is characterized by a remarkably stable global climate that enabled the rise of agriculture, cities, and human civilization as we know it.

What happened during the Holocene?

During the Holocene, humans transitioned from nomadic hunter-gatherers to settled agricultural societies. This epoch saw the invention of writing, the founding of the first cities, the rise and fall of empires, the Scientific Revolution, the Industrial Revolution, and the emergence of global civilization — all within a narrow band of climate stability.

How long is the Holocene?

The Holocene spans approximately 11,700 years, from the end of the last glacial period to the present. This interactive timeline covers 15,000 years, extending back into the Late Pleistocene to show the transition from ice age conditions into the stable Holocene climate.

Interactive Timeline

The Holocene

These are the past 15,000 years.
Each row is a century. Each square is a year.

Approximately 11,700 years ago, the ice retreated and the Earth entered a uniquely stable climate epoch — the Holocene. Within this narrow window, humans planted the first seeds, founded the first cities, devised the first alphabets. Everything we have built rests on this stability.

15,000 years · 865 events · 238 figures · 173 spans

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13,000 BCE – 2026 CE · Scroll to zoom · Drag to pan · Press / to search

About The Holocene

With the support of the
Potsdam Institute for Climate Impact Research (PIK)

An interactive visualization of 15,000 years of human history — from the retreat of Ice Age glaciers through the rise and fall of civilizations to the present day.

How to navigate

The grid is a map of time. Each small square is one year. Each row is a century (100 years). The full grid spans 151 centuries, from 13,000 BCE to 2026 CE.

Zoom — scroll wheel, pinch, or the +/− buttons
Pan — click-drag or touch-drag
Hover a year to see events, spans, and figures
Search — type any keyword, year, or name (press /)

What you see

Colored squares: Each year's color reflects its epoch and position. Brighter squares contain recorded events.
Span bars: Thin colored lines beneath years mark multi-year periods — empires, wars, movements, ages. Examples: Roman Republic and Empire (509 BCE–476 CE), World War II (1939–1945), Atlantic Slave Trade (1526–1867).
Event dots: White indicator marks appear on years that contain one or more point events — specific moments like inventions, battles, or discoveries.

The three epochs

Pleistocene: 13,000–9,700 BCE. The tail end of the last Ice Age. Humans live as hunter-gatherers; early settlements like the Natufian culture emerge.
Holocene: 9,700 BCE–1950 CE. The warm, stable climate epoch. Agriculture, writing, cities, empires, science, and industry all unfold here. The gradient reflects three formally defined stages: Greenlandian (Early, teal-green), Northgrippian (Middle, green), and Meghalayan (Late, gold-amber).
Anthropocene: 1950 CE–present. The era of human-scale planetary impact: nuclear technology, mass consumption, climate change, and the digital revolution. The violet palette marks a sharp break from the warm Holocene.

Controls

Thematic lenses: Filter events by category — Society, Science/Tech, Earth, Ecology, Culture, Conflicts, or Exploration. Only matching events and spans are shown.
Calendar selector: Choose from 16 world calendar systems to view the timeline through different cultural lenses. See the World Calendars section below for details and limitations.
Birth year: Enter your birth year to highlight your lifetime on the grid and see it in the context of deep history.
Color modes: Switch between three background coloring schemes: Epochs colors each year by its geological epoch (Pleistocene, Holocene, Anthropocene). Temp maps reconstructed global mean temperature anomaly onto a blue-to-red gradient. CO₂ maps atmospheric carbon dioxide concentration onto a purple-to-yellow gradient. The legend bar at the bottom shows the active scale with key reference marks.

World calendars

The calendar selector lets you view the 15,000-year timeline through 16 different calendar systems from cultures around the world. All year labels, axis labels, search, and the detail panel update to reflect your choice. Your selection is saved between visits.

Available calendars: Gregorian (BCE/CE) — the international standard, used as the internal reference.
Holocene Era (HE) — adds 10,000 years so that all of recorded history uses positive numbers. Year 1 CE = 10,001 HE.
Buddhist (BE) — +543 years. Used in Thailand, Cambodia, Laos, Myanmar, Sri Lanka.
Hebrew (AM) — Anno Mundi, +3,761 years. Dates before 3761 BCE fall back to Gregorian.
Islamic (AH) — Anno Hegirae. Lunar calendar, approximate conversion (see caveats). Dates before 622 CE fall back to Gregorian.
Persian Solar (SH) — Solar Hijri, official calendar of Iran and Afghanistan.
Ethiopian — 7–8 years behind the Gregorian calendar.
Coptic (AM) — Era of Martyrs, used by the Coptic Orthodox Church.
Bengali (BS) — Bangla calendar, used in Bangladesh and West Bengal.
Indian National (SE) — Saka Era, the official civil calendar of India.
Thai Solar (BE) — same offset as Buddhist, used officially in Thailand.
Amazigh — Berber calendar, epoch traditionally set at 950 BCE.
Assyrian — counts from the founding of Assur, +4,750 years.
Korean (Dangun) — Dangun Era, from the legendary founding of Gojoseon, +2,333 years.
Minguo (ROC) — Republic of China calendar, epoch at 1912 CE.
Juche — North Korean calendar, epoch at 1912 CE.
How it works: Most calendars use a simple year offset — a fixed number added to or subtracted from the Gregorian astronomical year. The internal data always remains in Gregorian; only the display changes. When you search for a year (e.g., "2569 BE"), the system converts it back to Gregorian to locate the correct grid cell.
Out-of-range years: Some calendars have a defined starting point. When a year falls before the calendar's epoch (e.g., a date before 622 CE in the Islamic calendar, or before 3761 BCE in the Hebrew calendar), the display falls back to Gregorian BCE/CE. This ensures every cell on the grid always has a meaningful label.

Caveats and limitations

Islamic calendar (AH) — The Islamic calendar is a purely lunar calendar with 354 or 355 days per year. An exact Gregorian-to-Hijri conversion requires astronomical new moon observations or tabular algorithms that vary by authority. This visualization uses a standard approximation formula: AH ≈ (G − 622) × 33/32. The result may differ by 1–2 years from the precise Hijri date. AH years are marked with an ≈ symbol to signal this uncertainty.
Hebrew calendar (AM) — The Hebrew calendar is lunisolar with complex leap-year and month-length rules (the Metonic cycle). The offset shown (+3,761) is the epoch year rounded to the nearest Gregorian year. Actual Hebrew years begin in autumn (Tishrei), not January, so a given Gregorian year may straddle two Hebrew years. For a 15,000-year timeline viewed at annual resolution, this 0–1 year discrepancy is within the grain of the grid.
Offset calendars — The Buddhist, Persian, Ethiopian, Coptic, Bengali, Saka, Thai, Amazigh, Assyrian, Korean, Minguo, and Juche calendars are all treated as fixed offsets from Gregorian. In practice, many of these have their own month structures, new year dates, and leap-year rules, so the day-level alignment is approximate. Since this visualization works at annual (not daily) resolution, the year number displayed is accurate to within ±1 year.
No proleptic extension — Calendar systems are not extended backwards beyond their historical or cultural origin. For example, the Islamic calendar is not shown before 622 CE, and the Minguo calendar is not shown before 1912 CE. Outside these ranges, years fall back to Gregorian.
Year zero — The Gregorian calendar has no year zero: 1 BCE is immediately followed by 1 CE. This visualization uses astronomical year numbering internally (where year 0 exists), converting to historical convention only on display. Other calendars (Holocene Era, Buddhist, etc.) do include year zero in their counting.
Millennium and century labels — The axis labels ("13th millennium BCE", "21st century CE") are recomputed for the active calendar. For calendars with large offsets (Assyrian: +4,750; Holocene: +10,000), the label numbering shifts accordingly. The grid structure itself — 100 columns per row, 10 rows per millennium — always reflects the underlying 15,000-year Gregorian span; only the labels change.

Calendars not included (and why)

Many cultures have developed rich timekeeping systems that we were unable to include here, not for lack of interest but because of genuine technical constraints at annual resolution:

Chinese, Vietnamese, Tibetan, and other lunisolar calendars — These use 60-year cycles (Heavenly Stems and Earthly Branches) rather than a single continuous count. Without a cumulative year number, there is no way to display them as a simple offset. A future version could annotate the current cycle and animal year for any given cell, but that requires a different interface than a dropdown label.
Maya Long Count — The Long Count uses a base-20 positional notation (e.g., 13.0.10.3.11) that does not map to a single year number. Converting correctly also requires choosing between the GMT and other correlation constants, which remain debated. A proper representation would need its own display format, not a numeric offset.
Hindu calendars — India alone has over 30 regional calendar variants (Vikram Samvat, Kali Yuga, etc.) with different epochs, month names, and regional practices. Selecting one risks misrepresenting the others. The Indian National Calendar (Saka Era) is included as the official civil standard.
Japanese Nengō (era names) — Japanese years are counted from the start of each emperor's reign (e.g., Reiwa 8). Since eras vary in length and reset on succession, they cannot be expressed as a fixed offset from Gregorian.
Indigenous and oral calendars — Many Indigenous cultures organize time through seasonal rounds, lunar observations, ecological markers, or ceremonial cycles rather than sequential year counts. These systems are deeply important but fundamentally different from the linear numbering this timeline uses. Representing them accurately would require rethinking the interface altogether — something we hope to explore in the future.

We want this timeline to be as universal and accessible as possible. Ideally, the entire site would be available in every language and every calendar system. We are not there yet, but every calendar added here is a step toward making 15,000 years of shared history feel a little more like everyone's story. If your calendar is missing and you know how it could be represented, we would be glad to hear from you.

Keyboard shortcuts

/ — Focus search
+ / − — Zoom in / out
0 — Reset zoom
Esc — Clear search / close panels

Data

The timeline contains 865 events, 238 historical figures, and 173 multi-year spans across 13 categories. Content aims for global coverage across all epochs, with particular attention to non-Western civilizations, women in history, and environmental milestones. This database is shared with the Corridor of Life climate timeline.

Climate data sources

Temperature: Osman et al. (2021), "Globally resolved surface temperatures since the Last Glacial Maximum", Nature 599, 239–244. Supplemented by HadCRUT5 (Morice et al. 2021) for 1850–2025. Baseline: 1850–1900 mean (pre-industrial reference period, per IPCC AR6). Values are anomalies in °C relative to this baseline.
CO₂: Bereiter et al. (2015), "Revision of the EPICA Dome C CO₂ record", Geophysical Research Letters 42, 542–549. Ice core composite covering 800,000 years; interpolated annually for this visualization. Supplemented by Mauna Loa Observatory (NOAA GML) for 1958–2025. Pre-industrial baseline: ~280 ppm (circa 1750 CE).

Both datasets are interpolated to annual resolution for the timeline grid.

Suggested citation

GLOBAÏA (2026). The Holocene — 15,000 Years of Human History [interactive visualization]. globaia.org/holocene-interactive/. Accessed .

Created by GLOBAÏA

Cultivating planetary awareness through science and art

globaia.org