| Control | Description |
|---|---|
| Theme (moon/sun icon) | Switch between dark and light mode |
| Keep screen on (monitor icon) | Prevent the display from sleeping |
| Tick seconds (stopwatch icon) | Switch between ticking and smooth second hand |
| Info (ⓘ button) | Show embed link, this help, and contact info |
To protect OLED and AMOLED displays, the clock subtly shifts its position every 10 minutes in a slow circular pattern. Dark Mode further reduces the risk of burn-in. Protection does not apply in embedded mode. Use ?burnin=false to disable.
This site works as a Progressive Web App. You can install it on your phone or computer for a full-screen clock and offline use. Use your browser’s menu (e.g. “Add to Home Screen” or “Install app”) to install.
Add ?tz= to the URL with any IANA timezone:
www.clocksimulator.com/?tz=America/New_York www.clocksimulator.com/?tz=Europe/London www.clocksimulator.com/?tz=Asia/Tokyo
Show multiple clocks at once by separating timezones with commas. This automatically enables dashboardMode. Use &rows= to control the grid layout:
www.clocksimulator.com/?tz=UTC,Europe/Helsinki,America/New_York www.clocksimulator.com/?tz=UTC,Europe/Helsinki,America/New_York,Asia/Tokyo&rows=2 (dashboardMode)
You can also use the dashboard builder (ⓘ → Build dashboard) to visually add timezones and configure the grid.
Embed the clock on any website via an <iframe>. Use the built-in embed panel (ⓘ → Embed this clock) to configure and copy the code.
Read the privacy policy at /privacy.html and the terms of service at /TOS.html.
This web app runs on sustainable energy and achieves an A+ carbon rating (<0.01g CO2 per visit). View the carbon report.
| Parameter | Values | Default |
|---|---|---|
embed | true | — |
tz | IANA timezone(s), comma-separated | Local time |
rows | Number (e.g. 2, 3) | Auto |
theme | dark, light, transparent | dark |
seconds | tick, smooth, hide | tick |
border | show, hide | show |
daynight | show, hide | hide |
numbers | show, hide | show |
shadows | true, false | true |
burnin | true, false | true |