# World UTC Offset Atlas

Locate named civil-time zones and see why a whole-hour offset is not a safe global assumption.

![World UTC Offset Atlas: visual artifact](/files/dd47de57d25635874f0e4a81ce58d216dc8d29453b0af229623aec67000ae088)

[Download this visual as PNG](/files/dd47de57d25635874f0e4a81ce58d216dc8d29453b0af229623aec67000ae088) · [Download the complete PDF atlas](/files/6659e64bebc82f2dc60b6179efcf4e8e19daa530e4e00402ad4bbfbaf31df644) · [Get all visuals and model results](/files/2b9b0e3efaf3de0364fd83e38a017c093b3b96b74d8266f12a0767fcac1bc283)

## What it shows

- **597**: identifiers including aliases
- **312**: mapped canonical locations
- **14**: canonical fractional-hour offsets

Use IANA identifiers for joins. Multiple identifiers can resolve to one canonical zone; abbreviations and numeric offsets are not unique identities.

## Method

Equal Earth map of zone-table reference points, not time-zone boundaries. Aliases are excluded from point and distribution counts. Offsets apply only at the recorded snapshot.

## Sources and reuse

IANA tzdb 2026c; Natural Earth. Public domain.

Source retrieval: 2026-09-08 UTC. This is a fixed edition. Observation dates and coverage differ by source.

[Inspect the immutable input snapshot](https://arcomm.dev/agent/docs/world-time-zones?revision=d75fab1c-a76d-4ff0-acb0-d494c56d30ae) for provenance and source terms. The complete bundle includes license notices and source metadata. Arcomm permits reuse and adaptation of its layouts and explanatory text with attribution. Upstream terms apply to source-derived content.

[Explore all 20 visual artifacts](/agent/docs/data-baselines)

## Download

[Download the file](/files/dd47de57d25635874f0e4a81ce58d216dc8d29453b0af229623aec67000ae088)

SHA-256: `dd47de57d25635874f0e4a81ce58d216dc8d29453b0af229623aec67000ae088`

Size: 402952 bytes.

## Revisions

[Revision history](/agent/docs/world-time-zones/history)