Emerald Gaia is an analog world time watch with four subdials, each of which displays information for a single city, whose name is labelled on the bottom of its subdial. You may customize the particular set of cities shown from our internal 80,000-city database.

Each subdial has a central set of 12-hour hands, a day/night ring showing the actual times of day and night against an outer 24-hour dial, a Sun hand which indicates the approximate time against that outer dial, and windows for AM/PM and for the day of the week.

In addition, the largest subdial on the left contains a second hand and a window for the day of the month. The largest subdial will always display the device time (to avoid confusion), but you can set it to a different city name within the same time zone. The day/night dial will show the sunrise and sunset time of whatever city name is displayed on the dial.

The face also has a small moonphase dial in the upper left. It does not rotate like the moonphase dials on Emerald Chandra and others, because it is intended to apply to all of the cities shown (the moonphase does not depend in any significant way on observer position, but the rotation does).

Note that the timezone rules are obtained from the version of the OS installed on the watch device, and may not reflect recently-enacted rule changes.

No network access is required; only the device time and location are used internally.

More information is available at the website listed.

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Keywords: time,watch,clock,astronomy,sunset,phase,moon,rise,sunrise,world,worldtime,mechanical,analog