EarthClock: Track Time Zones with a 3D Globe

EarthClock — Live Global Time & Daylight Map

EarthClock — Live Global Time & Daylight Map is a simple, elegant tool that visualizes current time and daylight across the planet on an interactive globe. It brings together three core pieces of information in one view: local time at any location, the live terminator showing daylight and night, and quick access to time zone details for planning or learning.

What it shows

• Real-time local time: Click or hover any point on the globe to see the current local time there.
• Daylight terminator: A moving shadow indicates where dawn, daylight, dusk, and night are happening right now.
• Time zone labels: Major cities and time zones are displayed for quick orientation.
• Sunrise/sunset indicators: For a selected location you can quickly see today’s sunrise and sunset times.

Why it’s useful

• Global coordination: Quickly compare times for remote teams, schedule meetings, or avoid contacting people at inconvenient hours.
• Travel planning: Visualize daylight patterns for destinations and plan activities around local sunrise/sunset.
• Education & curiosity: Understand Earth’s rotation, seasons, and how time zones relate to daylight visually.

Key features to expect

1. Interactive 3D globe with smooth rotation and zoom.
2. Accurate, continuously updating terminator line based on UTC and longitude.
3. Searchable city/timezone lookup and bookmarking of favorite locations.
4. Optional overlays: political boundaries, major airports, and daylight length heatmap.
5. Exportable snapshots or shareable links of a chosen view and time.

How it works (brief)

EarthClock calculates local solar time from the current UTC time and geographic longitude, applies time zone offsets and daylight saving rules, and renders the terminator using solar declination and the observer’s longitude to determine sunrise/sunset transitions. Time zone and DST data come from maintained timezone databases to keep offsets accurate.

Tips for power users

• Use bookmarked locations to quickly switch between team members’ timezones.
• Enable the heatmap overlay to find regions with the longest/shortest daylight for any selected date.
• Combine EarthClock snapshots with calendar invites to clearly communicate meeting times across zones.

EarthClock — Live Global Time & Daylight Map turns abstract time-zone math into a clear visual tool, making global scheduling, travel planning, and learning about Earth’s day/night cycle straightforward and immediate.