Tool name

Platform

Tool vendor

Comments

see also web based time zone services http://www.laatuk.com/books/multi-site_sources.html

Note! There are loads of time zone utilities available on the web, these are just some random examples:

http://dir.yahoo.com/Science/Measurements_and_Units/Time/Current_Time

Web based time zone services

World Time Explorer

Jesper Nørgaard Welen

http://www.cimmyt.org/timezone/index.htm

Freeware tool for finding local time around the world

Clox

Windows

Mirage Audio Visual Media

http://www.mirage1.u-net.com/clox.htm

World clock

WhenOnEarth

Windows

John Walker

http://www.fourmilab.ch/homeplanet/homeplanet2.html

Public domain software that shows local time around the world

TimeZoneHelper

Windows

Crystal Software

http://www.crystalsoftware.com.au/timezone.html

Helps to find appropriate same-time-different-place meeting time (by phone, or audio/video conference) for participants around the world or e.g. overlapping working time

Time Palette

Windows

Time Palette

http://www.timepalette.com

World clock

HomePlanet

Windows

John Walker

http://www.fourmilab.ch/homeplanet

Shows among other things where in the world it is curently day/night

Excel or any spread sheet program

A handy tool for checking/planning common time for phone calls and audio/video conferences on different time zones