Please note that v2 will take advantage of the latest timezones definitions in Windows, however you should be aware that Microsoft only automatically updated those in Windows XP (and Vista) and with the older versions of Windows you might have to manually edit things in registry or with TZEDIT, or just save the correct registry key from an updated computer and import that file.
Version 2.10 and newer will also fix some EarthSunX problems introduced by the December 2007 Microsoft TimeZone update.
Version 2.20 will fix a crash in XP German with a certain set of Microsoft Updates that are currently retired but which many users have automatically installed. Also there is a fix for 'calculate for a specific moment' and some extra tooltips in certain dialogs to help picking the right timezone for a specific city.
Version 2.30 will add millisecond display when activated with the or pressed, and a sound mark when activated with both pressed, and a better way to calculate WY=Week-of-the-Year.
Since version 3.00 a new option is available - CLOUDS ON/OFF - that option is disbled by default, but when you activate it EarthSunX will fetch the most recent 'live' cloud-map from the internet and use it to calculate a very realistic view of the Earth!