How were Time Zones Discovered ?
Does Daylight saving mean to save actual sunlight
?
Are you aware of the "International Date Line"
So For Your Information...
Today we will see about Timezones
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[Life before Timezones]
Before discovering timezones...
Every town had its own professional time keepers
Basically their job is to see when the sun
reaches its peak
and set the clock towers to 12 noon
If a town doesn't have clock towers
They go to watch mechanic shops to set the
correct time
In addition to time setting...
They also go to every house in the town
and set the same time every day
Imagine this...
A person coming to your home everyday at 12 noon...
Just to set time
and Guess What !! This is a paid service.
This was the situation before 19th Century
[The Purpose of Timezones]
Now,with each town following its own time..
Whenever you go outta town...You have to constantly
keep updating your watch
Even this was not a big deal back then
But when Railways was invented as a mode of
transport...
There started the real trouble
This is because
If people of India and Thailand experience
time difference it is not so problematic
But If you and neighbouring town have a time
difference of ten minutes
Then..That is a Problem..Right?
Hence A train said to arrive at 5:00, will
only come by 5:15
But once you reach the next station...
The train timings will be scheduled as per
the local timings followed there.
Because of all these unwanted confusion..
People started to avoid trains
And this brought huge losses to railway companies.
[The Logic of Time zones]
Searching for a possible practical solution
to this problem....
In 1878, a Scottish born Canadian Sir Sanford
Fleming
proposed the idea of world wide time zones
This concept is based on two already known
factors....They are
1 Rotation = 360°
1 Day = 24 Hours
So they divide our earth into 24 longitudes
With each longitude having a gap of 360/24
= 15°
Don't dare ask whether these lines were cut
or built...
because they all are totally imaginary
They call this Meridians too
[Accept Change Wide Range]
US Railway Stations Adopted these timezones
on 18th Niv 1883
In Oct 1884, An International Prime Meridian
Conference was held
And decided to select Greenwhich as the starting
point of all timezones
Many states in US Revolted against these newly
adopted time zones
Consequently In 1918,The US Government brought
in the Standard Time Act
Thus eventually all satates in US started
to follow these time zones
[Can You Travel Time?]
If there's a left then there's a right
If there's a night then there's a day
The Prime Meridian also has an equvivalent
opposite
But we were conspired by our school by not
teaching this !
That is, The International Date line
This line is roughly 180° oopposite to the
Prime Meridian
And the speciality of this line is
This is where the date changes actually begin
If the countries on the LHS have the date
of Next Day
The Countries on the right will have the date
of the previous day
That is if the date of the countries on the
right is September 5
Then the date on the left is September 6
So if you cross this line...
You too are a time traveler..
Right ?
[Three Into One is 3 in 1]
Another interesting fact is
If you wish to be at three different timezones
at the same time
Then you must be here
This is the Trip Point in Norway
This is the common border of Finland,Russia
and Norway
Here we have
Central Europeon Time
Eastern Europeon Time
and Further Eastern Europeon Time
all together in one spot
You can only visit this place in Norway
as both Russia and Finland banned public viewing
of this spot
Coming from International to National Levels
3 Time Zones pass through our country too
But we chose the Central Longitude at 82.5
E
If you wonder which district this longitude
passes....
You may ask..
In UP, In the district of Allahabad a small
town called Mirzapur exists..
And we chose this as our Indian Standard Time
When did we adopt our IST ?
That also comes under this month....
Sept 1st 1947 we adopted IST
[What is Daylight Saving ?]
All our phones will have a option called
Daylight Saving
But most of us don't know its real purpose
In 1895 Daylight Saving was Introduced by
a Kiwi Entomologist named George Hudson
Once upon a time long long ago if we want
to go to our school or college earlier
What we do ?
We set our clocks 5-10 mins ahead of time
and the same happens in Daylight Saving
In countries, Where summer season is short...
In order to utilize daytime more efficiently
They set their clocks one hour advance or
one hour behind
And This is called Daylight Saving
When the Spring Season Begins....
They set their clocks one hour in advance
We call it Spring Forward
Similarly when Autumn Season begins they set
their clocks one hour late
And we call this Fall back
This daylight saving system is followed by
US, Canada most parts of Europe
some parts of Australia and New Zealand
Over 70 Countries follow this system
Because of this...
A day during spring in these countries last
for 25 hours
while a day in autumn lasts for 23 hours
Remaining days will have the normal 24 hour
duration
So Next time, if some one asks howw long a
day is...
Ask them whether Daylight savings applied
or not ?
But in our India, Asia and other African Countries
this system is not followed
Because this system is not necessary
here
as all seasons are equally divided in these countries
Similar to timezones
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