Changing Gateway Time and Time Zone
Due to the default settings in its configuration files, TT recommends that you set the LSE Gateway to run in the CET time zone (UTC+01:00) with Daylight Savings enabled.
Changing Gateway Times During a Trading Session
TT does not recommend changing the LSE Gateway server time, date, or time zone during a trading session, as this will lead to duplicate fills containing different exchange times at startup. This may also lead to order quantities being incorrectly doubled in SOD records.
If you do have to change the gateway machine time or time zone during a trading session, you need to verify that the time and date match the Exchange’s time and date using the procedure titled, “Testing Fill Server Startup” in the TT Gateways Architecture System Administration Manual.