User timezones?

[fiveshorts]

Hi,

I'm trying to work out if it's possible to allow the user of a runtime financial trade tracking solution to input their own master timezone for their file and have all dates and times used in that file adjust accordingly?

e.g. this DB is being created in LA (PST) but will ship to users all round the world who'll each be using a different remote broker for their trades, so someone living in NY might be using a broker running out of Russia, in which case a trade will be actually be executed according to a Russian timeframe.

Any ideas gratefully received -)