Cerchio is a digital watch face: the time, large and centered, inside a 24-hour dial. The dial follows the sun: the circle is amber by day, orange through dawn and dusk, sky blue at night, with a small mark at solar noon. Dawn and dusk come from your location, the weather's or the last GPS fix, which is used for nothing else and never leaves the watch. A line on the circle shows the hour, and the seconds go round the edge of the screen, in low power mode too where the watch allows it. Above the time, icons shown only when there is something to report: - Battery, always shown, amber below 20% and orange below 10% - Phone, when connected - Alarm, when one is set - Recovery time, sky blue past a day, amber past two and orange past three - Wind, a wedge on a compass ring pointing where it blows: a bare ring below 1 km/h, sky blue from 20 km/h, amber from 39 and orange from gale force at 62 - AM/PM, on 12-hour watches Below it, two data fields of your choice, each an icon and its value: the weather as an icon for the conditions beside the temperature, and the sun as its next sunset or sunrise, its icon orange through dawn and dusk and a whole amber sun around solar noon. - A goal dot glides round from the top as your steps goal is done, a ring that turns orange once it is done - Set on the watch in Garmin's watch face editor: data fields, a color for the time and data, and an accent for the hour, the seconds and the goal dot - On AMOLED screens, always-on mode shows just the time - Open source under the MIT License: github.com/mafflin/cerchio

- Color wind and recovery icons in four tiers with day colors