Calculates, displays and automatically updates times and dates in different timezones with respect to daylight saving.
timezonecalculator directory into your WordPress Plugins directory (usually wp-content/plugins). Hint: You can also conduct this step within your Admin Menu.
In the WordPress Admin Menu go to the Plugins tab and activate the TimeZoneCalculator plugin.
Navigate to the Settings/TimeZoneCalculator tab and customize the timezones according to your desires.
If you have widget functionality just drag and drop TimeZoneCalculator on your widget area in the Appearance Menu. Add additional function and shortcode calls according to your desires.
Be happy and celebrate! (and maybe you want to add a link to http://www.bernhard-riedl.com/projects/)