AstroClock-Now ver 2.1 (Windows) gives you Seven Date/Time Clocks all on one screen!

This Astronomy Clock displays the current Local & UTC Date & Time, a Calendar, Local & Greenwich Sidereal Times, and the Julian Day.
The tabbed displays (which can be hidden) also include information for the current Sun, Moon, Eclipses, Planets, and has three timers that can be set independently.
The algorithms used are based on Jean Meeus book "Astronomical Algorithms"

Features:
- Report of Sun Rise, Set & Twilight and Moon Rise, Set & Phase
- Solar & Lunar Eclipses with Details and Maps
- Current Solar Sunspot Image and Information
- Lunar Phases for any year
- Details of Jupiter and Saturn and their Moons
- Map of Mars
- Planetary Phenomenon
- Current Bright Minor Planet Ephemeris Data
- Timers (Countdown, Alarm and Event)
- Configurable to your Geographic Location

http://driftwoodweb.com/astroclock