The End of Daylight Saving Time in 2019

On 2 a.m. today, we turned our clocks back one hour, marking the end of daylight saving time (DST) in 2019.

Postcard US-4002383 to Russia shows Hoover Dam with Arizona side on the right and Nevada side on the left, with the state boundary running across the dam.

Since Arizona is in the Mountain Time Zone (GMT-7) whereas Nevada is in the Pacific Time Zone (GMT-8), Arizona is one hour ahead. Therefore, if you stand across the state line on the dam right now, your left-side of body and your right-side of body will be in different time zones with one-hour time difference.

However, because Nevada observes DST while Arizona does not, during the summer there is no time difference. Interesting? Confusing? Next time when you visit the dam, pay attention to the clocks on the two intake towers; you will see.

Daylight saving time will return at 2:00 AM on Sunday, March 8, 2020.

Daylight Saving Time Ends in 2013

Daylight saving time (DST) ends today in the morning at 2:00 am. Following the expression Spring Forward, Fall Back, we set clocks back one hour, saying good bye to DST and entering Standard Time. DST returns next year on March 9, 2014.

Most areas of the United States currently observe DST. However, most areas of Arizona (except for the Navajo Nation, a Native American Reservation), along with Hawaii and the overseas territories of Puerto Rico, American Samoa, Guam, Northern Mariana Islands, and the United States Virgin Islands, do not observe DST. Arizona opted out the DST in 1968 largely in part because of Phoenix and Tucson being among the hottest US metropolitan areas in the summer. Extending daylight hours results in more people being active, thus more power usage from air conditioning units and cooling systems in homes and businesses.

Postcard US-2248458 to Tucson, Arizona showing Hoover Dam with Arizona side in the foreground and Nevada side in the background, as the state boundary runs across the dam. Since Arizona is in the Mountain Time Zone (GMT-7) whereas Nevada is in the Pacific Time Zone (GMT-8), Arizona is one hour ahead. However, because Nevada observes DST while Arizona does not, during the summer the clocks on the intake towers will show the same time. During the winter, the clock on the Nevada side will be one hour behind from the one on the Arizona side.

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The Tower at University of Texas, Austin

This postcard shows the main building at the center of the University of Texas at Austin campus in Downtown Austin, Texas on September 16, 2010. I was traveling from Dallas, Texas to Las Vegas, Nevada that day on my Jetblue All-You-Can-Jet (AYCJ) pass. However, since JetBlue did not have flights to or from Dallas, I took a bus to Austin in the morning for an afternoon flight to Long Beach, California, then onto Las Vegas. I had a few hours around noon, so I took a quick tour at University of Texas at Austin, and had lunch in a Thai restaurant near the campus.

The Main Building is known as "The Tower" since it has a 94 m or 307 ft tall clock tower, designed by architect Paul Philippe Cret and completed in 1937. It is the most recognizable landmark of the University and the city Austin. 

In a massacre on August 1, 1966, architectural engineering student Charles Joseph Whitman, opened fire from the observation deck of the tower of the Main Building, killing 16 Austin residents and wounding many more. He was shot to death by police at the end of 96-minute stand-off.

Gastown Steam Clock, Vancouver, Canada

Gastown Steam Clock, Vancouver, Canada

Postcard US-2359324 is traveling to Texas, USA, showing the Gastown steam clock, powered by steam from underground pipes that supply steam to heat many downtown buildings. The clock sounds its whistles every quarter-hour. It was built by horologist Raymond Saunders in 1977 based on an 1875 design.

I uploaded the following video of the steam clock in action to YouTube seven years ago on June 26, 2006. I have forgotten the login credential to that account since. However, to my surprise, it has accumulated 23259 viewers so far.