I'm using the Emerald Chronometer, which has 27 clock faces, most of them displaying astronomical information of some kind, such as Moon phase, Moon and Sun positions, orbital positions as well as rise and set times of the planets, local latitude, longitude, sidereal and solar time, lunar ascending and descending nodes, eclipses and more. Oh, and it tells the local time, too, usually within 100ms accuracy. It also has the usual complications such as stop-watch, timer, world clock, calendar, alarm.
Cheers
Steffen.