What time does the MT4 platform use?

 
I oughtta know this . . . but what time zone is used in the account history? GMT?
 

your dealers TZ

 

To help you discover this (and BTW my broker's TZ is different to their price info times by 1 or 2 hours) ...

Go to Price History (F2 or Tools - History Center) & check out hourly prices over a weekend

If it jumps from say 2010.10.22 22:00 to 2010.10.25 00:00 you know it's "European Daylight Saving Time" = GMT+02:00

One reason for brokers choosing this TZ is so that trading starts on Monday Morning immediately after midnight.

Using true GMT or US times would mean a short Sunday trading day

Reason: