Like most states in the USA,
Daylight-Saving
Time (DST) is observed in
Las Vegas Time, where the
time is shifted forward by 1 hour to
Pacific Daylight Time (PDT); which is 7 hours behind
Greenwich Mean Time (GMT-7).
After the Summer months the time in
Las Vegas Time is shifted
back by 1 hour to US Pacific Standard Time (PST) or (GMT-8)