InterPlanet

00:00

Mon

UTC

Click + to add a location

Meeting Scheduler

Work hours

Marginal

Rest

Good overlap

Settings

Language

Display language

Theme

Colour theme

Display

Show time Toggles the large clock display in each location card

Show timezone Toggles the timezone abbreviation and UTC offset label

Show city name Toggles the city or planet name. Click the name to edit it.

Show country Toggles the country or region name beneath the city name

Show sky label Toggles the sky condition label (e.g. Clear Sky, Twilight, Overcast)

Show hourly bar Toggles the 24-hour bar showing work hours (green), marginal (orange), and rest periods (red)

Compact mode Shows time and timezone only — hides weather, hourly bar, and work indicator

Show work indicator Toggles the dot and label showing whether it is currently work hours, off-shift, or a rest day

Show weather details Toggles weather data for Earth cities: temperature, humidity, rain probability, and conditions. Requires internet access to Open-Meteo API.

Show sunrise, sunset & moon Toggles sunrise and sunset times and the moon phase percentage for Earth cities.

Show propagation delay Toggles the one-way signal propagation delay to each planet.

Reduce motion Disables sky colour transitions and UI animations. Also respects your OS reduced-motion preference automatically.

Layout

Horizontal rows Switches the layout between vertical columns and horizontal rows.

Location

Location not yet acquired.

Data & Privacy

Save your cities & settings between visits using a cookie?

Cookies: not set

Advanced

Non-Earth position

For non-Earth positions, enter location JSON:

JSON Config

DTN Signal API

Leave blank to disable. No request is made if empty.

AI Assistant API

Provides plain-language recommendations after Best Windows. Leave blank to disable.

Weather API

Leave blank to disable weather data. Default: open-meteo.com

View on GitHub

Welcome back

Time across the solar system — in real time.

Local time and sky colour for any city or planet
Work-hour indicators and meeting scheduler for Earth and Mars
Live signal propagation delays across the solar system

Take a tour

Clear all data?

This permanently removes all cities and settings.

Reopen tour via Settings