1. Timezones 2. Reminder: Test!

Parts of a Map Types of maps Compass Rose Scale- types of scale (3 types), small scale

vs. large scale Latitude and longitude Hemispheres Topographic maps Contour lines Timezones

CGC1D

The Earth rotates in a clockwise direction. Thus, the sun appears to rise in the East and

set in the West. The Earth has 24 times zones because it

takes the Earth 24 hours to revolve around the sun

Each time zone is one hour apart Each time zone is 15 longitude

360 / 24 = 15 As a result there are 24 one hour time

standard zones Every place within a time zone has the same

time, referred to as its “standard time”

Standard time zones were not required prior to the 1800s because it was impossible for people to travel large distances in a short period of time.

The development of rapid railway transportation changed travel dramatically, allowing people to travel large distances quickly.

This caused confusion, since every town set their own clocks by the sun e.g. 8:00 in Ottawa would

be about 7:45 in Toronto A Canadian engineer

named Sir Sandford Fleming proposed a system of standard time zones. This relied on a consistent system of latitude and longitude.

The Prime Meridian is the centre time zone The zone extends 7.5 on either side of the 0

longitude Time in this zone is called Universal Time

(UT) and the standard time in other zones is compared to it

The Prime Meridian

Time zones west of the prime meridian are earlier than the universal time (the time at the prime meridian) e.g. If UT is 12:00am, next time zone west is

11:00pm.

Time zones east of the prime meridian are later than the universal time (the time at the prime meridian) e.g. If UT is 12:00am, the next time zone east

is 1:00am.

Flip over to the back of your page to label the time zones. Where it says “Hours Ahead of GMT” that means Greenwich Mean Time. Use the UTC number for this.

Canada spans 6 time zones: Pacific, Mountain, Central, Eastern, Atlantic and Newfoundland

We are in the Eastern Standard Time Zone If it is 1:00pm in Kingston, it is the same in the entire

Eastern time zone In Canada, this includes all of Quebec and most of Ontario

(as far west as Thunder Bay) In the US, this includes all of the eastern states and as far

west as Michigan

As you will see on the next slide, Some countries modify time zones (change them from straight lines) for political reasons e.g. All of China is in same time zone, so all of

the country is on the same time. Some places are located where time

zones meet For example St. John's, so it is given half a

time zone (1/2 an hour) Interactive Map

Many parts of the world change their time according to the season

During the summer, daylight savings time is used to extend daylight hours

For example, the sun in standard time would set at 8:00pm. When time is in daylight savings, it would set at 9:00pm (therefore 1 more hour of daylight)

Why do we do this?

Energy is saved and people get to enjoy more of the day i.e. wake up when light, go to bed when dark

In Canada, Daylight Savings begins on the second Sunday in March and ends the first Sunday of November

“Spring ahead, fall back” This year, daylight savings time began on

Sunday, March 9  We set the clocks ahead one hour It will end on Sunday, November 2  We will set the clocks back one hour

Observe Daylight Savings Time Tried it but gave it up

Never used it

Saskatchewan is naturally located within the Mountain Standard Time (MST) – the same timezone as Alberta.

Under The Time Act of 1966, Saskatchewan adopted Central Standard Time, and began sharing the same timezone as Manitoba

Since they don’t observe Daylight Savings Time, they share the same time as Alberta during the summer months and the same time as Manitoba during the winter months

The issue has been hotly debated in Saskatchewan since 1966 when the Time Act was introduced.

Some farmers fear that shifting the clocks would disrupt feeding and milking schedules for animals. They are also not happy about the prospect of having their children wait in the cold pre-dawn of a Saskatchewan winter for the school bus.

Businesses have long pushed for the change to standardize their operations.