FALL BACK, SPRING FORWARD
DAYLIGHT SAVING TIME ENDS SUNDAY, NOVEMBER 7, 2021 at 2:00 AM … the first Sunday in November in 2021. Turn your clocks back one hour overnight Saturday-to-Sunday and gain one hour of sleep. The Shepherd gate clock at the Royal Observatory, Greenwich, UK does not change for Daylight Savings Time.
ARLINGTON HEIGHTS TIME ZONE – DAYLIGHT SAVING TIME ENDS
Arlington Heights, Illinois is in the Central Time Zone of the United States (CST -6, CDT -5). Daylight Savings Time is observed from the second Sunday in March at 2:00 a.m. until the first Sunday in November at 2:00 a.m.
In Central Standard Time (CST), Arlington Heights is 6 hours behind the Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT).
In Central Daylight Time (CDT), Arlington Heights is 5 hours behind the Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT).
Daylight Savings Time is a misspelled phrase, but more common than the correct term, Daylight Saving Time.
When Daylight Saving Time ends on the first Sunday in November, turn clocks back 1 hour to Central Standard Time (-6 GMT/UT) “Fall Back” … Daylight begins earlier; Nightfall arrives earlier — as perceived with the time change.
We’re used to a sunrise of about 7:31 a.m. DST, and after the time change we will experience sunrise at 6:33 a.m. CST
We’re used to a sunset of about 5:39 p.m. DST, and after the time change we will experience sunset at 4:38 p.m. CST
The time change in the Fall is a little confusing because even though our obligations and schedules occur one hour later (somewhat relaxing on the mind), the sun’s activity arrives earlier (with perhaps a stress on the body and Circadian rhythm linked to light and dark). The mind feels like it gains an hour, when at 2:00 a.m. we turn the clock back to 1:00 a.m. However, the body senses change in the sun’s activity, which is arriving earlier in time — especially with each sunrise and sunset for the next few days.
Standard time will be in effect until 2 a.m. on March 13, 2022. When Daylight Saving Time begins on the second Sunday in March, we will turn clocks forward 1 hour to Daylight Saving Time (-5 GMT/UT).
“Spring Forward”… Daylight begins later; Nightfall arrives later. The body feels like it loses an hour.
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See also …
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The Shepherd Gate Clock is the clock mounted on the wall outside the gate of the Royal Greenwich Observatory building in Greenwich, London. The clock, an early example of an electric clock, was a slave mechanism controlled by electric pulses transmitted by a master clock inside the main building. But not the clock is controlled by a quartz mechanism inside the main building. The master clocks are still on display, but they are not functional. The ‘network’ of master and slave clocks was constructed and installed by Charles Shepherd in 1852. The clock by the gate was probably the first to display Greenwich Mean Time to the public, and is unusual in using the 24-hour analogue dial.
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Permission is granted to copy, distribute and/or modify the photo of the Shepherd gate clock at the Royal Observatory, Greenwich, UK under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.