The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
"When it is Oct 28, 2010 09:00 in United States/San Francisco, what time will it be in United Kingdom/London?" Often people ask this kind of questions; especially when you work with people in different time zone, and you want to know when they say the meeting is 9:00am San Francisco time, what will it be in your time zone, vice versa. This apps converts any time from one time zone to another time zone, considering the daylight saving in. It covers about 6000 cities and regions. The city time zone data is from the latest public City Time Zones database; the region time zone data is from tz database. This free version has iAd's (advertisement); or you can get the non-iAd version TzConvertor for $0.99. TzConvertor is faster than TimeZoneConvertorFree, since not running advertisement.