install

Additional install commands

macOS

Homebrewverified · 100%

brew install tz

local Homebrew formula metadata

Linux

Alpine Linux apkverified · 92%

sudo apk add tz

Alpine Linux edge package indexes · tz · source: dl-cdn.alpinelinux.org

Nixverified · 92%

nix profile install nixpkgs#tz

nixpkgs package indexes · pkgs/by-name/tz/tz/package.nix · source: api.github.com

overview

Package summary

CLI time zone visualizer

Project links

Commands and aliases

tz

history

Project history and usage

tz is an interactive terminal helper for comparing times across selected IANA time zones. It is part of the small but persistent Unix tradition of wrapping tzdb names in more human-friendly command-line interfaces.

Project history

The oz/tz repository was created in January 2021. Its README presents the program as an interactive TUI for scheduling across time zones, displaying local time, UTC, and user-chosen zones.

The release history shows a fast early 2021 series through 0.6, then later releases in 2023, 2024, and 2025. The README documents a configuration file, an environment-variable workflow through `TZ_LIST`, command-line arguments, and Go source builds.

Adoption history

The README lists Homebrew and Arch packaging and `go install`; the batch package facts add apk and Nix. This is typical adoption for a small Go terminal app that solves a daily coordination problem for distributed teams.

Its adoption depends on the IANA time zone database naming scheme: users pass zone names such as `Europe/Paris` or `US/Pacific`, and the tool renders those names into local-time comparisons.

How it is used

Typical use is to run `tz` with no arguments for local and UTC time, pass zone names on the command line, set `TZ_LIST` for shell-level defaults, or store preferred zones in `~/.config/tz/conf.toml`.

In package-manager workflows, tz is a lightweight install for people who do not want a calendar app just to answer cross-zone scheduling questions from the terminal.

Why package nerds care

tz matters as a small wrapper around tzdb rather than as new time-zone infrastructure. Package nerds care because it shows the value of keeping canonical zoneinfo data in the operating system while packaging focused CLI views on top.

Timeline

2021-01-30: oz/tz GitHub repository created.
2021-03-16: v0.4 released during the early release series.
2023-01-16: v0.6.3 released.
2025-02-14: v0.8.0 released.

Related projects

The IANA Time Zone Database provides the zone names and rules used by tz.
tzdiff is a related terminal tool for comparing local and remote time-zone columns.

Sources

https://api.github.com/repos/oz/tz
https://api.github.com/repos/oz/tz/releases
https://github.com/oz/tz
source_facts.package-manager

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 8 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix: ~/.config/tz/conf.toml

executables

Installed executables

Command	Kind	Exposure	Note
`tz`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version0.8.0

manager updated

local dataok

upstreamcurrent

latest detectedv0.8.0

https://github.com/oz/tz

infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package key	brew:tz
Version	0.8.0
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/tz
Homepage	https://github.com/oz/tz
Repository	https://github.com/oz/tz
Upstream docs	https://github.com/oz/tz#readme
License	GPL-3.0-or-later
Source archive	https://github.com/oz/tz/archive/refs/tags/v0.8.0.tar.gz
Build dependencies	go
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, sonoma, ventura, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	tz
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Nix95%

tz

nix profile install nixpkgs#tz

normalized package name match
Matched by: Tz

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/tz/tz/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

apk95%

tz 0.8.0-r13

interactive TUI program that displays time across a few time zones of your choosing

https://github.com/oz/tz

sudo apk add tz

License: GPL-3.0-or-later
Architecture: x86_64
Source Package: tz
1 dependencies
1 provides
normalized package name match
Matched by: Tz

Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: tz from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/tz.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install tz with Homebrew, apk, Nix