1)   1st Clock 4.0
See the date as well as the time in the tray clock in a way you want. Monitor PC performance. Show the calendar in one click. Never miss important events with reliable alarms! Keep an exact clock with atomic time. View the time in other time zones.
date, alarms, atomic time, time zones, calendar, system clock, taskbar clock, tclock, tclockex, tray clock,

 2)   ZoneTick 2.7.0
The ZoneTick download replaces Windows system clock with a multiple time zone clock, utilizing skins, alarms, and double-click actions for each timezone. A taskbar utility for anyone traveling or doing business overseas. Auto-daylight saving shift.
clock, clocks, time, time zone, time zones, timezone, taskbar clock, system clock, international time, world time,

 3)   Skin Clock 1.0
SkinClock is the replacement for standard tray clock having skinned interface. You are able to select between multiple differently styled skins. It lets you showing date and calendar, adjust and synchronize time, create and run reminders
synctime, atomic clock, atomic time, taskbar clock, clock, tray, desktop, trayclock, sntp, atomic server,