You need to upgrade your Flash PlayerThis is replaced by the Flash content. Daylight-Saving Time is not in effect. Oregon is in the Pacific Time Zone in the United States. Pacific Standard Time (PST) is 8 hours behind Greenwich Mean Time (GMT-8). A small portion of the state, near the Idaho border, is in the Mountain Time Zone.Like most states in the U.S., Daylight- Saving Time is observed in Oregon , where the time is shifted forward by 1 hour to PDT; which is 7 hours behind Greenwich Mean Time (GMT-7). After the Summer months the time is shifted back by 1 hour to Pacific Standard Time (PST) or (GMT-8).