Time Zones and Daylight Savings Time
Daylight Savings Time (DST)
In 2006, Daylight Savings Time (using the old standard) began on April 2nd at 2:00 AM
and ended on October 29th at 2:00 AM.
Last observed in 2006, the old standard began on the first Sunday in April
and ended on the last Sunday of October.
Beginning in 2007, both the United States and Canada extended the duration of Daylight Savings Time by four weeks.
The extended Daylight Savings Time began on the second Sunday of March (the 11th) at 2:00 AM
and ended on the first Sunday of November (the 4th) at 2:00 AM.
For 2008, Daylight Savings Time began on March 9th at 2:00 AM
and will end on November 2nd at 2:00 AM.
For 2009, Daylight Savings Time will begin on March 8th at 2:00 AM
and will end on November 1st at 2:00 AM.
For 2010, Daylight Savings Time will begin on March 14th at 2:00 AM
and will end on November 7th at 2:00 AM.
The Newfoundland and Labrador Time Zone has a slightly different definition for Daylight Savings Time.
Daylight Savings Time begins one minute after midnight (12:01 AM) on the second Sunday in March
and ends one minute after midnight (12:01 AM) on the first Sunday in November.
Not all communities observe Daylight Savings Time:
Most of Arizona does not observe Daylight Savings Time.
In northeastern Arizona, the Navajo Nation observes and the
Hopi Nation (which lies within the Navajo Nation) does not observe Daylight Savings Time.
Most of Alaska observes Daylight Savings Time, but it is not observed in the Aleutian Islands or on Saint Lawrence Island.
Hawaii does not observe Daylight Savings Time.
While most of British Columbia observes Daylight Savings Time, some eastern communities do not.
Most of Saskatchewan does not observe Daylight Savings Time, but some communities do.
Time Zones
For the areas covered by RoadsideThoughts, the eastern-most time zone is the Newfoundland Time Zone
and the western-most is the Hawaii-Aleutian Time Zone.
In order from east to west, the time zones are:
| Time Zone |
Abbreviation: Standard / Daylight |
If 3:00 PM Eastern |
UTC Offset (in Hours) |
| |
| Newfoundland | NST / NDT | 4:30 PM | -3 1/2 |
| Atlantic | AST / ADT | 4:00 PM | -4 |
| |
| Eastern | EST / EDT | 3:00 PM | -5 |
| Central | CST / CDT | 2:00 PM | -6 |
| Mountain | MST / MDT | 1:00 PM | -7 |
| Pacific | PST / PDT | 12:00 PM | -8 |
| |
| Alaskan | AKST / AKDT | 11:00 AM | -9 |
| |
| Hawaii-Aleutian |
HAST / HADT - or - HST / HDT |
10:00 AM | -10 |
|