Fullscreen clock · Unix · Cron · Timezones

UTC · UTC
UTC · Local time

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Offset
estimating
RTT
offline
More display options

Location

Timezone board

Current city

UTC

Timezone

UTC

UTC now

--:--:-- UTC

City clocks

Beijing

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Asia/Shanghai

Shanghai

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Asia/Shanghai

New York

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America/New_York

London

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Europe/London

Tokyo

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Asia/Tokyo

Singapore

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Asia/Singapore

San Francisco

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America/Los_Angeles

Dubai

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Asia/Dubai

Sydney

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Australia/Sydney

Paris

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Europe/Paris

Shortcuts: C copy seconds · H 12/24 · M milliseconds · L calm mode · F fullscreen

City time facts

Rio de Janeiro · Brazil

Timezone

America/Sao_Paulo

UTC offset

GMT-3

Local date

Friday, May 8, 2026

Work window

09:00–18:00 local

Unix now

1778291791

DST

No DST

City actions

Use this city in your time tools.

Add to timezone board

↗

Open a board centered on this city.

Compare with another city

↗

Check the time difference and overlap.

Plan a meeting

↗

Start a meeting planner with this city.

Related city clocks

Nearby teams and useful comparisons

São Paulo→

America/Sao_Paulo · Brazil

New York→

America/New_York · United States

Los Angeles→

America/Los_Angeles · United States

San Francisco→

America/Los_Angeles · United States

Seattle→

America/Los_Angeles · United States

Chicago→

America/Chicago · United States

Time tool shortcuts

Convert, schedule, compare, and share time without leaving the clock.

Convert→

Unix timestamp

Seconds, milliseconds, ISO 8601.

Preview→

Cron schedules

Next run times with timezone context.

Plan→

Timezone board

City clocks and work-hour overlap.

Meet→

Meeting time

One time across multiple cities.

Focus→

Countdown

Shareable fullscreen timer.

City time links

Live city clocks, time differences, and shareable boards.

City clocks

0/10 working
Beijing→

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·

—

Open clock

Shanghai→

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·

—

Open clock

New York→

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·

—

Open clock

London→

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·

—

Open clock

Tokyo→

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·

—

Open clock

Singapore→

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·

—

Open clock

San Francisco→

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·

—

Open clock

Dubai→

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·

—

Open clock

Sydney→

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·

—

Open clock

Paris→

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·

—

Open clock

Time comparisons

Beijing ↔ New York--:-- / --:-- · —CompareBeijing ↔ London--:-- / --:-- · —CompareBeijing ↔ Tokyo--:-- / --:-- · —CompareShanghai ↔ San Francisco--:-- / --:-- · —CompareShanghai ↔ London--:-- / --:-- · —CompareNew York ↔ London--:-- / --:-- · —Compare

Quick boards

Global5 city clocks →Asia6 city clocks →US + Europe5 city clocks →CN + US + UK3 city clocks →

Reference guides

Unix timestamp guide

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Seconds vs milliseconds, UTC storage, ISO strings, and common API mistakes.

Cron expression guide

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Field order, Quartz differences, timezone rules, and production scheduling pitfalls.