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Denver - United States Actual Time and Date

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Denver timezone information

UTC/GMT Offset Daylight time zone - UTC/GMT -6 hours in daylight saving time (MDT)
Next time change on 11/03/2019 01:00 am (local time) (MST)
Daylight saving time Actually in DST
Daylight Saving Time start on : Sunday 10 March 2019 am:00 am
Daylight Saving Time end on : Sunday 03 November 2019 01:00 am

Actual offset : UTC/GMT -6 hours (in DST time)
In DST Time : UTC/GMT - -6 hours
In STD Time : UTC/GMT - -7 hours

Geographical and astronomical datas : United States

Coordinates Latitude : 39° 43' north
Longitude : 104° 59' west
Astronomic Observations Sunrise at : 11:54 pm
Transition hout : 05:57 am
Sunset at : 12:01 pm
Duration of day : 12 hours
Civil twilight start at : 11:33 pm
Civil twilight end at : 12:22 pm

Time information on United States - Denver

The clock uses Roman numerals and the man is dressed in stripped-down Roman gladiator style
The text says "You can't stop time..
But you can turn it back one hour at 2 a.m
28 when daylight-saving time ends and standard time begins."
A 2001 U.S public service advertisement reminded people to adjust clocks manually.
Many computer-based systems can adjust automatically when DST starts and finishes, based on their time zone settings
However, changes to DST rules causes problems in existing installations
A better way to handle summertime is to switch DST options off and synchronize the clock of your PC by an external device like a radio clock
For example, the 2007 change to DST rules in North America required many computer systems to be upgraded, with the greatest impact on email and calendaring programs like Microsoft Outlook; the upgrades consumed a significant effort by corporate information technologists.
Many systems in use today base their date/time calculations from data derived from zoneinfo, which is sometimes known as tzdata.
The tz database maps a name to the named location's historical and predicted clock shifts
This database is used by many computer software systems, including most Unix-like operating systems, Java, and Oracle; When temporal authorities change DST rules, zoneinfo updates are installed as part of ordinary system maintenance
In Unix-like systems the TZ environment variable specifies the location name, as in TZ='America/New_York'.
Older or stripped-down systems may support only the TZ values required by POSIX, which specify at most one start and end rule explicitly in the value
For example, TZ='EST5EDT,M3.2.0/02:00,M11.1.0/02:00' specifies time for eastern North America starting in 2007
TZ must be changed whenever DST rules change, and the new TZ value applies to all years, mishandling some older time stamps.
As with zoneinfo, a user of Microsoft Windows configures DST by specifying the name of a location, and the operating system then consults a table of rule sets that must be updated when DST rules change
Procedures for specifying the name and updating the table vary with release
Updates are not issued for older versions of Microsoft Windows.
Windows Vista supports at most two start and end rules per time zone setting

Source : Wikipedia
Others cities in this country : Washington DC - Honolulu - Indianapolis - Juneau - Phoenix - Adak - Anchorage - Boise - Chicago - Detroit - Fort Wayne - Guam - Los Angeles - Louisville - New York - Nome - Norfolk - Saipan