Sunday 8 March 2015 2am local time
until Sunday 1 November 2015 2am local time
see: Daylight-Saving-Time.com for details
USA and Canada Standard Time Date schedules here
Pacific Daylight Time (PDT) is the Daylight Saving Time (DST) of Pacific Time Zone of the United States of America (USA) and Canada.
In most states in the USA and in most provinces in Canada, Daylight-Saving Time (DST) is observed. DST PT or PDT is 7 hours behind Greenwich Mean Time (GMT-7).
After the Summer months Pacific Time is shifted back by 1 hour to US Pacific Standard Time. Pacific Standard Time (PST) is 8 hours behind Greenwich Mean Time (GMT-8).