What is new
- Search a bundled atlas of 72 global city centers
- Filter cities by six continents
- Search cities by name, country, or region
- Sort cities by name
- Sort cities by country
- Sort cities from north to south or vice versa
- Sort cities from east to west or vice versa
- Switch between city cards and compact list
- Select a city by clicking a map marker
- Inspect each city's country, coordinates and local clock
- Save favorite cities in browser storage
- Show only favorite cities
- Copy city coordinates and view them on OpenStreetMap
- Launch routes or Sun calculations from the selected city
- Export filtered city data to CSV
- Choose start and destination cities for a route
- Accept manually entered latitude and longitude route endpoints
- Calculate great-circle route distance in kilometers, miles and nautical miles
- Show initial bearing in degrees and compass directions
- Reverse a route with one click
- Interpolate five great-circle waypoints including midpoint
- Draw the spherical route on a coordinate-grid canvas
- Read geographic coordinates by clicking the route map
- Estimate journey duration across five travel speeds
- Copy a shareable link encoding route endpoints and mode
- Export a route as GPX
- Export route waypoints as CSV
- Save and reopen the five most recent routes
- Project a destination using distance and bearing
- Calculate geographic antipodes
- Convert decimal coordinates to DMS display
- Estimate geometric horizon distance based on height
- Estimate the circumference of a selected latitude circle
- Calculate longitude-based local mean solar-time offset
- Select a world city and local date/time for sunlight
- Calculate solar elevation and azimuth
- Estimate sunrise and sunset in city-local time
- Estimate daylight duration and solar noon
- Estimate civil twilight and Sun's 6° altitude crossings
- Plot estimated solar altitude throughout the day
- Jump to today and both solstice dates
- Estimate shadow length for a custom-height object
- Copy a plain-text solar observation report
- Display clocks for multiple selected cities simultaneously
- Show city UTC offsets with time-zone/DST handling
- Switch between 12- and 24-hour clocks
- Add, remove, reset and persist favorite world clocks
- Compare meeting times across city time zones and export an ICS calendar event
- Study a bank of 40 curated geography questions with topic and round-length filters
- Use shuffled quiz answers, practice hints, explanations, scoring, streaks, best-score saving, missed-answer review and keyboard shortcuts